Six things we learned implementing Rockstar on Quarkus

Let’s run Rockstar programs on Quarkus! What could possibly go wrong?

Rockstar is an example of an “esoteric language,” designed to be interesting rather than intuitive, efficient or especially functional. Rockstar’s interesting feature is that its programs use the lyrical conventions of eighties rock ballads. Rockstar has been implemented in many languages, but not as a JVM language. This was clearly (clearly!) a gap that needed fixing, so Holly and Hanno have stepped in to make sure us JVM folks aren’t missing out. As a bonus, because “Bon Jova” is a JVM language, it can take advantage of Quarkus-y goodness. Along the way, a lot was learned about eighties music, classloaders, parsing, bytecode manipulation, and the important relationship between language style, syntax, and semantics.

There will be live coding, live singing and live guitar!

Transcript

1. Six things we learned implementing Rockstar on Quarkus Hanno Embregts Holly Cummins
2. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer
3. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer Rockstar developer for PHP, Bootstrap, HTML 5, CS3 Hello Everyone, We’re looking for a world-class developer to join up with our growing team, located across the world. We are growing fast in terms of revenue and projects, and need some help with development chops to take and run with things. About Us - We’re just a big ol’ smorgasbord of fun. We have a variety of client and in-house projects / companies that mostly run in the 6 to 7 fi gure per year range, so you’ll always be working on something new, exciting, and mostly in spaces that are making a meaningful di ff erence in the world. Top Notch Ability to Figure Stu ff Out Above all else, you’ll need to be a problem solver. I don’t expect you to be a master at everything, but you will need to be able to fi gure out how to do something you don’t know how.
4. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer Are you a rockstar developer? Are you an experienced developer looking for a new challenge and an opportunity to advance your skills and career in a great working environment? If you are an ambitious, self-starter able to thrive in a startup environment, we have the perfect job for you! We are looking for a competent programmer with PHP expertise who will be our fi rst in-house technology expert and play an integral role in setting the company’s overall development strategy. You will work directly under the founding team and will act as both a technology expert and consultant, making decisions that will impact the current and future state of our product. The perfect candidate will be familiar with PHP, Laravel, SQL, CSS, and have a general understanding of martech solutions. Who you are • By nature, a friendly, helpful human being • Must be comfortable with working in an existing code base • Able to read and understand existing code • Able to use good judgment when evaluating trade-o ff s between speed, quality, and cost • Able to debug and work backwards through code • Speaks and writes clearly and articulately • Must be end-user centric • Has a knack for thinking and developing in a future-proof manner • This is a full-time position Rockstar developer for PHP, Bootstrap, HTML 5, CS3 Hello Everyone, We’re looking for a world-class developer to join up with our growing team, located across the world. We are growing fast in terms of revenue and projects, and need some help with development chops to take and run with things. About Us - We’re just a big ol’ smorgasbord of fun. We have a variety of client and in-house projects / companies that mostly run in the 6 to 7 fi gure per year range, so you’ll always be working on something new, exciting, and mostly in spaces that are making a meaningful di ff erence in the world. Top Notch Ability to Figure Stu ff Out Above all else, you’ll need to be a problem solver. I don’t expect you to be a master at everything, but you will need to be able to fi gure out how to do something you don’t know how.
5. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer Are you a rockstar developer? Are you an experienced developer looking for a new challenge and an opportunity to advance your skills and career in a great working environment? If you are an ambitious, self-starter able to thrive in a startup environment, we have the perfect job for you! We are looking for a competent programmer with PHP expertise who will be our fi rst in-house technology expert and play an integral role in setting the company’s overall development strategy. You will work directly under the founding team and will act as both a technology expert and consultant, making decisions that will impact the current and future state of our product. The perfect candidate will be familiar with PHP, Laravel, SQL, CSS, and have a general understanding of martech solutions. Who you are • By nature, a friendly, helpful human being • Must be comfortable with working in an existing code base • Able to read and understand existing code • Able to use good judgment when evaluating trade-o ff s between speed, quality, and cost • Able to debug and work backwards through code • Speaks and writes clearly and articulately • Must be end-user centric • Has a knack for thinking and developing in a future-proof manner • This is a full-time position Rockstar developer for PHP, Bootstrap, HTML 5, CS3 Hello Everyone, We’re looking for a world-class developer to join up with our growing team, located across the world. We are growing fast in terms of revenue and projects, and need some help with development chops to take and run with things. About Us - We’re just a big ol’ smorgasbord of fun. We have a variety of client and in-house projects / companies that mostly run in the 6 to 7 fi gure per year range, so you’ll always be working on something new, exciting, and mostly in spaces that are making a meaningful di ff erence in the world. Top Notch Ability to Figure Stu ff Out Above all else, you’ll need to be a problem solver. I don’t expect you to be a master at everything, but you will need to be able to fi gure out how to do something you don’t know how. Hiring: Rockstar developer We are looking for a rockstar developer to join us, starting towards the end of this month (Jul 2023). We are a software startup, and currently taking on agency-type work, building websites and web applications for other companies. We also have several products / services that we want to build. The developer will start out by helping with some of the client work, and then based on performance, may get to work on a product. We work primarily with Python, Django, DRF, Javascript, HTML, CSS, React, NextJS, Celery, Postgres, Redis, AWS, Git, Github, and more.
6. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer Are you a rockstar developer? Are you an experienced developer looking for a new challenge and an opportunity to advance your skills and career in a great working environment? If you are an ambitious, self-starter able to thrive in a startup environment, we have the perfect job for you! We are looking for a competent programmer with PHP expertise who will be our fi rst in-house technology expert and play an integral role in setting the company’s overall development strategy. You will work directly under the founding team and will act as both a technology expert and consultant, making decisions that will impact the current and future state of our product. The perfect candidate will be familiar with PHP, Laravel, SQL, CSS, and have a general understanding of martech solutions. Who you are • By nature, a friendly, helpful human being • Must be comfortable with working in an existing code base • Able to read and understand existing code • Able to use good judgment when evaluating trade-o ff s between speed, quality, and cost • Able to debug and work backwards through code • Speaks and writes clearly and articulately • Must be end-user centric • Has a knack for thinking and developing in a future-proof manner • This is a full-time position Rockstar developer for PHP, Bootstrap, HTML 5, CS3 Hello Everyone, We’re looking for a world-class developer to join up with our growing team, located across the world. We are growing fast in terms of revenue and projects, and need some help with development chops to take and run with things. About Us - We’re just a big ol’ smorgasbord of fun. We have a variety of client and in-house projects / companies that mostly run in the 6 to 7 fi gure per year range, so you’ll always be working on something new, exciting, and mostly in spaces that are making a meaningful di ff erence in the world. Top Notch Ability to Figure Stu ff Out Above all else, you’ll need to be a problem solver. I don’t expect you to be a master at everything, but you will need to be able to fi gure out how to do something you don’t know how. Hiring: Rockstar developer We are looking for a rockstar developer to join us, starting towards the end of this month (Jul 2023). We are a software startup, and currently taking on agency-type work, building websites and web applications for other companies. We also have several products / services that we want to build. The developer will start out by helping with some of the client work, and then based on performance, may get to work on a product. We work primarily with Python, Django, DRF, Javascript, HTML, CSS, React, NextJS, Celery, Postgres, Redis, AWS, Git, Github, and more. Looking for a rockstar developer I'm looking for a rockstar developer to join me, starting maybe towards the end of this month (Jul 2023). I run a software startup, and currently we're taking on agency- type work, building websites and web applications for other companies. I also have several products / services that I want to build. The developer will be working with me personally, and will start out by helping me with some of the client work. We work primarily with Python, Django, DRF, Javascript, HTML, CSS, React, NextJS, Celery, Postgres, Redis, AWS, Git, Github, and more.
7. @holly_cummins @hannotify #RedHat #InfoSupport Wanted: Rockstar developer Are you a rockstar developer? Are you an experienced developer looking for a new challenge and an opportunity to advance your skills and career in a great working environment? If you are an ambitious, self-starter able to thrive in a startup environment, we have the perfect job for you! We are looking for a competent programmer with PHP expertise who will be our fi rst in-house technology expert and play an integral role in setting the company’s overall development strategy. You will work directly under the founding team and will act as both a technology expert and consultant, making decisions that will impact the current and future state of our product. The perfect candidate will be familiar with PHP, Laravel, SQL, CSS, and have a general understanding of martech solutions. Who you are • By nature, a friendly, helpful human being • Must be comfortable with working in an existing code base • Able to read and understand existing code • Able to use good judgment when evaluating trade-o ff s between speed, quality, and cost • Able to debug and work backwards through code • Speaks and writes clearly and articulately • Must be end-user centric • Has a knack for thinking and developing in a future-proof manner • This is a full-time position Rockstar developer for PHP, Bootstrap, HTML 5, CS3 Hello Everyone, We’re looking for a world-class developer to join up with our growing team, located across the world. We are growing fast in terms of revenue and projects, and need some help with development chops to take and run with things. About Us - We’re just a big ol’ smorgasbord of fun. We have a variety of client and in-house projects / companies that mostly run in the 6 to 7 fi gure per year range, so you’ll always be working on something new, exciting, and mostly in spaces that are making a meaningful di ff erence in the world. Top Notch Ability to Figure Stu ff Out Above all else, you’ll need to be a problem solver. I don’t expect you to be a master at everything, but you will need to be able to fi gure out how to do something you don’t know how. Hiring: Rockstar developer We are looking for a rockstar developer to join us, starting towards the end of this month (Jul 2023). We are a software startup, and currently taking on agency-type work, building websites and web applications for other companies. We also have several products / services that we want to build. The developer will start out by helping with some of the client work, and then based on performance, may get to work on a product. We work primarily with Python, Django, DRF, Javascript, HTML, CSS, React, NextJS, Celery, Postgres, Redis, AWS, Git, Github, and more. Looking for a rockstar developer I'm looking for a rockstar developer to join me, starting maybe towards the end of this month (Jul 2023). I run a software startup, and currently we're taking on agency- type work, building websites and web applications for other companies. I also have several products / services that I want to build. The developer will be working with me personally, and will start out by helping me with some of the client work. We work primarily with Python, Django, DRF, Javascript, HTML, CSS, React, NextJS, Celery, Postgres, Redis, AWS, Git, Github, and more. Wanted: A rockstar developer for [redacted] Agencies often have a hard time competing with private-sector employers for top-notch IT talent, but this job might hold special appeal for the open-data crowd: The [redacted] team is hiring its own developer. This "IT specialist (applications software)" will join the small crew of dataphiles in the [redacted] department, where he or she will serve as an in-house software engineer, collaborate with outside developers, and serve as web architect for [redacted]. The technical underpinnings of [redacted], which launched in May 2009, have been largely built by contractors, but [redacted] has now decided to bring some coding capacity onto the permanent sta ff . Details of the job are posted on [redacted]. But would-be applicants had better hurry -- the application window closes on June 11.
8. @holly_cummins @hannotify #RedHat #InfoSupport
9. @holly_cummins @hannotify #RedHat #InfoSupport
10. the creation story of Rockstar Images: DALL-E Dylan Beattie
11. the creation story of Rockstar Images: DALL-E Wouldn’t it be fun to write a spec for a language called Rockstar? Dylan Beattie
12. the creation story of Rockstar Images: DALL-E I have beer, so I now see the language should work like this, and … Wouldn’t it be fun to write a spec for a language called Rockstar? Dylan Beattie
13. the creation story of Rockstar Images: DALL-E I have beer, so I now see the language should work like this, and … Wouldn’t it be fun to write a spec for a language called Rockstar? Dylan Beattie in Australia
14. the creation story of Rockstar Images: DALL-E I have beer, so I now see the language should work like this, and … Wouldn’t it be fun to write a spec for a language called Rockstar? Dylan Beattie in Australia
16. Developers turn coffee into code …
17. Developers turn coffee into code … and beer into ridiculous language specs.
18. @holly_cummins @hannotify #RedHat #InfoSupport Thanks to Dylan, you can become a certified rockstar developer Image: Dylan Beattie
19. @holly_cummins @hannotify #RedHat #InfoSupport Rockstar is an “esoteric language”
20. @holly_cummins @hannotify #RedHat #InfoSupport Brainfuck ++++++++++[>+++++++>+++++++++ +>+++<<<-]>++.>+.+++++++ ..+++.>++.<<++++++++++++++ +.>.+++.------.--------.>+. Hello World:
21. @holly_cummins @hannotify #RedHat #InfoSupport Chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken Hello World:
22. @holly_cummins @hannotify #RedHat #InfoSupport Existing Rockstar implementations
23. @holly_cummins @hannotify #RedHat #InfoSupport Existing Rockstar implementations Satriani (interpreter written in JavaScript, and the official reference implementation) Rocky (interpreter written in Java) RockstarJava (interpreter written in Java) KaiserRuby (transpiler written in Ruby) Maiden (interpreter written in Rust) …and many more in different languages
24. @holly_cummins @hannotify #RedHat #InfoSupport
25. @holly_cummins @hannotify #RedHat #InfoSupport None of these are JVM languages.
26. @holly_cummins @hannotify #RedHat #InfoSupport None of these are JVM languages. This is obviously a terrible gap.
27. @holly_cummins @hannotify #RedHat #InfoSupport Why did we need another implementation? Because we could.
28. @holly_cummins @hannotify #RedHat #InfoSupport Developers love reinventing things.
29. @holly_cummins @hannotify #RedHat #InfoSupport What shall we call it? Naming things is the hardest problem in computer science.
30. @holly_cummins @hannotify #RedHat #InfoSupport
31. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help?
32. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters)
33. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream)
34. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard)
35. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses)
36. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath)
37. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe)
38. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen)
39. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen) 8. The Rolling Scones (The Rolling Stones)
40. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen) 8. The Rolling Scones (The Rolling Stones) 9. Grind Maiden (Iron Maiden)
41. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen) 8. The Rolling Scones (The Rolling Stones) 9. Grind Maiden (Iron Maiden) 10. AC/Decaf (AC/DC)
42. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen) 8. The Rolling Scones (The Rolling Stones) 9. Grind Maiden (Iron Maiden) 10. AC/Decaf (AC/DC) 11. Dire Coffee-straits (Dire Straits)
43. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? 1. The Brew Fighters (The Foo Fighters) 2. Cream Roasters (Cream) 3. Java Leppard (Def Leppard) 4. Guns 'N' Coffees (Guns N' Roses) 5. Black Sabbath Blend (Black Sabbath) 6. The Mocha Crüe (Mötley Crüe) 7. Van Halentino (Van Halen) 8. The Rolling Scones (The Rolling Stones) 9. Grind Maiden (Iron Maiden) 10. AC/Decaf (AC/DC) 11. Dire Coffee-straits (Dire Straits) 12. …
44. @holly_cummins @hannotify #RedHat #InfoSupport RockStarBucks?
45. @holly_cummins @hannotify #RedHat #InfoSupport JEP Leppard?
46. @holly_cummins @hannotify #RedHat #InfoSupport Bon Jova.
47. @holly_cummins @hannotify #RedHat #InfoSupport
48. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Hello World
49. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Christine says hello world Say Christine
50. @holly_cummins @hannotify #RedHat #InfoSupport School of Rock(star)
51. @holly_cummins @hannotify #RedHat #InfoSupport Rule 1. If you can’t sing it, you can’t have it.
52. @holly_cummins @hannotify #RedHat #InfoSupport syntax
53. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Let’s Learn ROCKSTAR
54. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) (This program prints "42") Comments
55. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) (This program prints "42") …but comments are for the weak. (See Rule 1.) Comments
56. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Say "Hello world!" Output
57. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Say "Hello world!" …or ‘shout’, ‘whisper’ Output
58. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Poetic string literals Christine says hello world Initialises Christine with “hello world”, no quotes needed
59. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) (This program prints “42") The answer is sing it Shout the answer Poetic number literals Initialises the answer with 42, no quotes needed
60. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Many ways to say the same thing
61. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) My dreams were ice. A life unfulfilled; wakin' everybody up, taking booze and pills Many ways to say the same thing
62. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) My dreams were ice. A life unfulfilled; wakin' everybody up, taking booze and pills Many ways to say the same thing The tide is low. A ball flung-about, beach abandoned, no soiree beats the shore
63. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) My dreams were ice. A life unfulfilled; wakin' everybody up, taking booze and pills Many ways to say the same thing (3.1415926535) The tide is low. A ball flung-about, beach abandoned, no soiree beats the shore
64. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Input Listen to your heart
65. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Input Initialises your heart with input from stdin Listen to your heart
66. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Conditionals If your heart is open Say “Love will find a way” Else say “Livin' on my own”
67. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Conditionals If your heart is equal to open… If your heart is open Say “Love will find a way” Else say “Livin' on my own”
68. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Loops The walls are high and mighty While the walls are nothing Knock the walls down
69. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Loops Decrement the walls from 436 until 0. The walls are high and mighty While the walls are nothing Knock the walls down
70. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Functions Mama wants power Send power times power
71. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Functions wants defines parameter(s), send returns a result. Mama wants power Send power times power
72. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Arrays Rock bands with 0, 1, 2 While bands Let charge be pop bands Shout Mama taking charge
73. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Arrays Rock initialises an array; pop removes an element; taking separates function name from params Rock bands with 0, 1, 2 While bands Let charge be pop bands Shout Mama taking charge
74. @holly_cummins @hannotify #RedHat #InfoSupport Launching these is annoying. We can do better, right?
75. @holly_cummins @hannotify #RedHat #InfoSupport We can use Quarkus.
76. @holly_cummins @hannotify #RedHat #InfoSupport
77. @holly_cummins @hannotify #RedHat #InfoSupport Why Quarkus?
78. @holly_cummins @hannotify #RedHat #InfoSupport Why Quarkus? Quarkus rocks.
79. @holly_cummins @hannotify #RedHat #InfoSupport Why Quarkus? Quarkus rocks. No, really. Quarkus rocks.
80. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus rocks.
81. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus rocks. 2022 Hanno (somewhere under there) Holly
82. @holly_cummins @hannotify #RedHat #InfoSupport
83. @holly_cummins @hannotify #RedHat #InfoSupport
84. @holly_cummins @hannotify #RedHat #InfoSupport
85. @holly_cummins @hannotify #RedHat #InfoSupport
86. @holly_cummins @hannotify #RedHat #InfoSupport
87. @holly_cummins @hannotify #RedHat #InfoSupport
88. @holly_cummins @hannotify #RedHat #InfoSupport
89. @holly_cummins @hannotify #RedHat #InfoSupport
90. @holly_cummins @hannotify #RedHat #InfoSupport come see us for these stickers
91. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus rocks
92. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Quarkus rocks
93. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Quarkus rocks
94. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Less boilerplate, more action Quarkus rocks
95. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Less boilerplate, more action Rockstar developers are not into that whole brevity thing. Quarkus rocks
96. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Less boilerplate, more action Dev UI Rockstar developers are not into that whole brevity thing. Quarkus rocks
97. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Less boilerplate, more action Dev UI Integration with Java libraries Rockstar developers are not into that whole brevity thing. Quarkus rocks
98. @holly_cummins @hannotify #RedHat #InfoSupport Live-coding Native compilation Less boilerplate, more action Dev UI Integration with Java libraries Marketplace of extensions Rockstar developers are not into that whole brevity thing. Quarkus rocks
99. @holly_cummins @hannotify #RedHat #InfoSupport Step 1. Write a JVM language.
100. @holly_cummins @hannotify #RedHat #InfoSupport Step 1a. Write a parser.
101. @holly_cummins @hannotify #RedHat #InfoSupport Step 1a. Don’t write a parser. Use Antlr.
102. @holly_cummins @hannotify #RedHat #InfoSupport Generating a grammar
103. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help?
104. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? THERE ARE NO PARENTHESES IN EXPRESSIONS IN ROCKSTAR
105. @holly_cummins @hannotify #RedHat #InfoSupport Can the internet help?
106. @holly_cummins @hannotify #RedHat #InfoSupport Can the internet help?
107. learning @holly_cummins @hannotify #RedHat #InfoSupport Antlr is really useful (once you grok it)
108. @holly_cummins @hannotify #RedHat #InfoSupport How does Antlr work?
109. @holly_cummins @hannotify #RedHat #InfoSupport
110. @holly_cummins @hannotify #RedHat #InfoSupport document
111. @holly_cummins @hannotify #RedHat #InfoSupport document
112. @holly_cummins @hannotify #RedHat #InfoSupport document output or actions
113. @holly_cummins @hannotify #RedHat #InfoSupport document rockstar program output or actions
114. @holly_cummins @hannotify #RedHat #InfoSupport document rockstar program output or actions bytecode generation bytecode
115. @holly_cummins @hannotify #RedHat #InfoSupport document abstract syntax tree (AST) rockstar program output or actions bytecode generation bytecode
116. @holly_cummins @hannotify #RedHat #InfoSupport document abstract syntax tree (AST) rockstar program output or actions bytecode generation bytecode
117. @holly_cummins @hannotify #RedHat #InfoSupport tokens document abstract syntax tree (AST) rockstar program lexing output or actions tokens bytecode generation tokens tokens tokens tokens tokens tokens bytecode
118. @holly_cummins @hannotify #RedHat #InfoSupport tokens document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation tokens tokens tokens tokens tokens tokens rules rules rules bytecode
119. @holly_cummins @hannotify #RedHat #InfoSupport tokens document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
120. @holly_cummins @hannotify #RedHat #InfoSupport prep work tokens document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
121. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar prep work tokens document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
122. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar prep work defines tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
123. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions prep work defines tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
124. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions prep work rule de fi nitions defines tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
125. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions prep work rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
126. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions Java types prep work rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
127. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions Java types AST listener interface prep work rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
128. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions antlr Java types AST listener interface prep work rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode
129. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions antlr Java types AST listener interface prep work rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode your code
130. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions antlr Java types AST listener interface prep work type safe accessor to the result of parsing rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode your code
131. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions antlr Java types AST listener interface prep work type safe accessor to the result of parsing rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens your code bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode your code
132. @holly_cummins @hannotify #RedHat #InfoSupport antlr grammar token de fi nitions antlr Java types AST listener interface listener implementation prep work type safe accessor to the result of parsing rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens your code bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode uses your code
133. @holly_cummins @hannotify #RedHat #InfoSupport it took me a while to understand this bit was needed and what it might look like antlr grammar token de fi nitions antlr Java types AST listener interface listener implementation prep work type safe accessor to the result of parsing rule de fi nitions defines generates tokens fragment de fi nitions document abstract syntax tree (AST) rockstar program reassemble (“parsing”) lexing output or actions tokens your code bytecode generation parse-time tokens tokens tokens tokens tokens tokens rules rules rules bytecode uses your code
134. @holly_cummins @hannotify #RedHat #InfoSupport
135. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story…
136. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story…
137. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story… Fragments are like letters.
138. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story… Fragments are like letters. Tokens are like words.
139. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story… Fragments are like letters. Tokens are like words. Rules are like sentences and paragraphs.
140. @holly_cummins @hannotify #RedHat #InfoSupport If the document is a story… Fragments are like letters. Tokens are like words. Rules are like sentences and paragraphs.
141. @holly_cummins @hannotify #RedHat #InfoSupport fragment S: [Ss]; CONSTANT_EMPTY: E M P T Y | | S I L E N T | | S I L E N C E; constant: CONSTANT_UNDEFINED | | CONSTANT_NULL | | CONSTANT_TRUE | | CONSTANT_FALSE | | CONSTANT_EMPTY;
142. @holly_cummins @hannotify #RedHat #InfoSupport fragment S: [Ss]; CONSTANT_EMPTY: E M P T Y | | S I L E N T | | S I L E N C E; constant: CONSTANT_UNDEFINED | | CONSTANT_NULL | | CONSTANT_TRUE | | CONSTANT_FALSE | | CONSTANT_EMPTY; fragment
143. @holly_cummins @hannotify #RedHat #InfoSupport fragment S: [Ss]; CONSTANT_EMPTY: E M P T Y | | S I L E N T | | S I L E N C E; constant: CONSTANT_UNDEFINED | | CONSTANT_NULL | | CONSTANT_TRUE | | CONSTANT_FALSE | | CONSTANT_EMPTY; fragment token
144. @holly_cummins @hannotify #RedHat #InfoSupport fragment S: [Ss]; CONSTANT_EMPTY: E M P T Y | | S I L E N T | | S I L E N C E; constant: CONSTANT_UNDEFINED | | CONSTANT_NULL | | CONSTANT_TRUE | | CONSTANT_FALSE | | CONSTANT_EMPTY; fragment token simple rule
145. @holly_cummins @hannotify #RedHat #InfoSupport fragment S: [Ss]; CONSTANT_EMPTY: E M P T Y | | S I L E N T | | S I L E N C E; constant: CONSTANT_UNDEFINED | | CONSTANT_NULL | | CONSTANT_TRUE | | CONSTANT_FALSE | | CONSTANT_EMPTY; fragment token simple rule regex-like syntax
146. @holly_cummins @hannotify #RedHat #InfoSupport You’re going to need a debugger.
147. @holly_cummins @hannotify #RedHat #InfoSupport
148. @holly_cummins @hannotify #RedHat #InfoSupport public class BytecodeGenerator extends RockstarBaseListener {
149. @holly_cummins @hannotify #RedHat #InfoSupport public class BytecodeGenerator extends RockstarBaseListener { Antlr generates this interface
150. @holly_cummins @hannotify #RedHat #InfoSupport @Override public void enterProgram(Rockstar.ProgramContext ctx) { public class BytecodeGenerator extends RockstarBaseListener { Antlr generates this interface
151. @holly_cummins @hannotify #RedHat #InfoSupport @Override public void enterProgram(Rockstar.ProgramContext ctx) { public class BytecodeGenerator extends RockstarBaseListener { one method for each rule Antlr generates this interface
152. @holly_cummins @hannotify #RedHat #InfoSupport @Override public void enterProgram(Rockstar.ProgramContext ctx) { public class BytecodeGenerator extends RockstarBaseListener { one method for each rule Antlr generates this interface Antlr generates this type
153. @holly_cummins @hannotify #RedHat #InfoSupport @Override public void enterProgram(Rockstar.ProgramContext ctx) { public class BytecodeGenerator extends RockstarBaseListener { one method for each rule Antlr generates this interface Antlr generates this type @Override public void enterStatement(Rockstar.StatementContext ctx) { Rules can nest
154. @holly_cummins @hannotify #RedHat #InfoSupport Step 1b. Generate bytecode.
155. learning @holly_cummins @hannotify #RedHat #InfoSupport Don’t be afraid to manipulate bytecode; maybe do be afraid of doing it with ASM.
156. @holly_cummins @hannotify #RedHat #InfoSupport public class BytecodeGenerator implements Opcodes { public byte[] generateBytecode(String name) { ClassWriter cw = new ClassWriter(0); FieldVisitor fv; MethodVisitor mv; AnnotationVisitor av0; cw.visit(49, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null); cw.visitSource("Hello.java", null); { mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); mv.visitInsn(RETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } { … Hello World in ASM
157. @holly_cummins @hannotify #RedHat #InfoSupport package org.example; import org.objectweb.asm.AnnotationVisitor; import org.objectweb.asm.ClassWriter; import org.objectweb.asm.FieldVisitor; import org.objectweb.asm.MethodVisitor; import org.objectweb.asm.Opcodes; public class BytecodeGenerator implements Opcodes { public byte[] generateBytecode(String name) { ClassWriter cw = new ClassWriter(0); FieldVisitor fv; MethodVisitor mv; AnnotationVisitor av0; cw.visit(49, ACC_PUBLIC + ACC_SUPER, name, null, "java/lang/Object", null); cw.visitSource("Hello.java", null); { mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null); mv.visitVarInsn(ALOAD, 0); mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); mv.visitInsn(RETURN); mv.visitMaxs(1, 1); mv.visitEnd(); } { mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null); mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;"); mv.visitLdcInsn("Hello World"); mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V"); mv.visitInsn(RETURN); mv.visitMaxs(2, 1); mv.visitEnd(); } cw.visitEnd(); return cw.toByteArray(); } } Hello World in ASM
158. @holly_cummins @hannotify #RedHat #InfoSupport mv.visitInsn(ICONST_1) ASM has never made sense to me - here “visit” means “create” (obviously?)
159. @holly_cummins @hannotify #RedHat #InfoSupport Gizmo a humanising layer on top of ASM
160. @holly_cummins @hannotify #RedHat #InfoSupport Step 2. Write a Quarkus extension.
161. @holly_cummins @hannotify #RedHat #InfoSupport
162. @holly_cummins @hannotify #RedHat #InfoSupport
163. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) Compiling with Quarkus
164. @holly_cummins @hannotify #RedHat #InfoSupport Yes, we did TDD with Rockstar.
165. @holly_cummins @hannotify #RedHat #InfoSupport How do you write a Rockstar program?
166. @holly_cummins @hannotify #RedHat #InfoSupport How do you write a Rockstar program? Red, Green, Refactor
167. learning @holly_cummins @hannotify #RedHat #InfoSupport Quarkus extensions can be created easily, but adding support for an alternate language seems to be a rare use case
168. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus is a different way of building Java https://matheuscruz.dev/2024/01/12/developing-a-quarkus-extension/
169. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus is a different way of building Java It is both a framework and a build time augmentation toolkit. https://matheuscruz.dev/2024/01/12/developing-a-quarkus-extension/
170. @holly_cummins @hannotify #RedHat #InfoSupport Quarkus is a different way of building Java It is both a framework and a build time augmentation toolkit. https://matheuscruz.dev/2024/01/12/developing-a-quarkus-extension/ It focuses on developer experience and extensibility.
171. @holly_cummins @hannotify #RedHat #InfoSupport Extensions exist to seamlessly integrate libraries into Quarkus’ architecture
172. @holly_cummins @hannotify #RedHat #InfoSupport Extensions exist to seamlessly integrate libraries into Quarkus’ architecture Which basically means “do more things at build time”.
173. @holly_cummins @hannotify #RedHat #InfoSupport Extensions exist to seamlessly integrate libraries into Quarkus’ architecture Which basically means “do more things at build time”. And there’s more!
174. @holly_cummins @hannotify #RedHat #InfoSupport Writing a Quarkus extension is fairly straightforward https://quarkus.io/guides/building-my-first-extension
175. @holly_cummins @hannotify #RedHat #InfoSupport Writing a Quarkus extension is fairly straightforward You can follow the “Building my first extension” guide. https://quarkus.io/guides/building-my-first-extension
176. @holly_cummins @hannotify #RedHat #InfoSupport A Quarkus extension consists of two parts https://quarkus.io/guides/building-my-first-extension
177. @holly_cummins @hannotify #RedHat #InfoSupport A Quarkus extension consists of two parts The runtime module, representing the capabilities that are exposed to the application’s developer. https://quarkus.io/guides/building-my-first-extension
178. @holly_cummins @hannotify #RedHat #InfoSupport A Quarkus extension consists of two parts The runtime module, representing the capabilities that are exposed to the application’s developer. https://quarkus.io/guides/building-my-first-extension The deployment module, applying all Quarkus optimisations during the build, by describing capabilities as build items.
179. @holly_cummins @hannotify #RedHat #InfoSupport So, let’s write an extension that compiles Rockstar programs to bytecode. Sounds easy enough, right?
180. @holly_cummins @hannotify #RedHat #InfoSupport Let’s stand on the shoulders of giants. And draw inspiration from the existing support for Kotlin, Groovy & Scala.
181. @holly_cummins @hannotify #RedHat #InfoSupport Let’s stand on the shoulders of giants. https://quarkus.io/extensions/io.quarkus/quarkus-kotlin And draw inspiration from the existing support for Kotlin, Groovy & Scala.
182. @holly_cummins @hannotify #RedHat #InfoSupport Let’s stand on the shoulders of giants. https://quarkus.io/extensions/io.quarkus/quarkus-kotlin And draw inspiration from the existing support for Kotlin, Groovy & Scala. https://quarkus.io/extensions/io.quarkus/quarkus-groovy
183. @holly_cummins @hannotify #RedHat #InfoSupport Let’s stand on the shoulders of giants. https://quarkus.io/extensions/io.quarkus/quarkus-kotlin And draw inspiration from the existing support for Kotlin, Groovy & Scala. https://quarkus.io/extensions/io.quarkus/quarkus-groovy https://quarkus.io/extensions/io.quarkus/quarkus-scala
184. @holly_cummins @hannotify #RedHat #InfoSupport public interface CompilationProvider extends Closeable { Set<String> handledExtensions(); void compile(Set<File> files, Context context); }
185. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) DEV UI
186. @holly_cummins @hannotify #RedHat #InfoSupport Step 3. Solve problems with Rockstar.
187. learning @holly_cummins @hannotify #RedHat #InfoSupport Programming is hard; trying to rhyme makes it harder
188. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help?
189. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme?
190. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme? ChatGPT: Sure, I can help you create a Rockstar program that rhymes and uses conditionals. Here it is. <program that doesn’t even rhyme>
191. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme? ChatGPT: Sure, I can help you create a Rockstar program that rhymes and uses conditionals. Here it is. <program that doesn’t even rhyme> Hanno: That program doesn’t rhyme.
192. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme? ChatGPT: Sure, I can help you create a Rockstar program that rhymes and uses conditionals. Here it is. <program that doesn’t even rhyme> Hanno: That program doesn’t rhyme. ChatGPT: My apologies for that oversight. Let me provide you with a corrected Rockstar program. <program that rhymes but doesn’t compile>
193. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme? ChatGPT: Sure, I can help you create a Rockstar program that rhymes and uses conditionals. Here it is. <program that doesn’t even rhyme> Hanno: That program doesn’t rhyme. ChatGPT: My apologies for that oversight. Let me provide you with a corrected Rockstar program. <program that rhymes but doesn’t compile> Hanno: Nice rhyming, but that program doesn’t compile!
194. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help? Hanno: Hi, can you create a Rockstar program that demonstrates conditionals? And can you make it rhyme? ChatGPT: Sure, I can help you create a Rockstar program that rhymes and uses conditionals. Here it is. <program that doesn’t even rhyme> Hanno: That program doesn’t rhyme. ChatGPT: My apologies for that oversight. Let me provide you with a corrected Rockstar program. <program that rhymes but doesn’t compile> Hanno: Nice rhyming, but that program doesn’t compile! ChatGPT: I appreciate your patience, apologies. Let me provide you with a corrected Rockstar program. <program that rhymes but still doesn’t compile>
195. learning @holly_cummins @hannotify #RedHat #InfoSupport AI isn’t taking our jobs just yet.
196. @holly_cummins @hannotify #RedHat #InfoSupport Can AI help?
197. @holly_cummins @hannotify #RedHat #InfoSupport AI is not very good at inventing interesting esoteric languages.
198. @holly_cummins @hannotify #RedHat #InfoSupport AI is not very good at writing Antlr grammars for complex things.
199. @holly_cummins @hannotify #RedHat #InfoSupport
200. @holly_cummins @hannotify #RedHat #InfoSupport Step 4. Debugging.
201. @holly_cummins @hannotify #RedHat #InfoSupport
202. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) 1 Billion Row Challenge
203. @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) (Steps: parse the file into rows, aggregate into towns, go through each town and aggregate, print output) (Utility function for rounding to one decimal place) doRound takes num let num be num * 10 turn round num let num be num / 10 return num (Step 1: Read lines from stdin and put them into a lines array) push lines (initialise the array) listen to stdin (listen to the input, which we choose to call stdin) while stdin push stdin into lines listen to stdin (Step 2: Sort the lines into an array of results for each station) push stations (initialise the array) push stationList (initialise the array outside the while scope) delimiter is ";" let line be pop lines while line split line into segments with delimiter let stationName be segments at 0 let stationResults be stations at stationName if not stationResults push stationName into stationList (we only do this if first time we have seen this station) let temperature be segments at 1 push temperature into stationResults (this always leaves us with a mysterious at element 0, and I don't know why) let stations at stationName be stationResults pop lines into line (Now sort the station names, using a bubble sort) i is 0 let length be stationList (using an array in a scalar context gives its length) while i is less than length j is 0 let maxj be length minus i while j is less than maxj let aa be stationList at j let bb be stationList at j + 1 if aa is greater than bb let stationList at j be bb let stationList at j + 1 be aa build j up build i up (Now go through each station and aggregate the array; we cannot use a function very easily to iterate because pop removes elements) let name be pop stationList (we cannot iterate over the array of results since it is most like a map, with non-numeric indexes, so we iterate over the array of names) let results be "{" while name let readings be stations at name total is 0 min is 300000 max is -300000 pop readings into temperature pop readings into temperature (do it again because there is a leading mysterious) count is 0 while temperature cast temperature build count up if temperature is less than min let min be temperature if temperature is greater than max let max be temperature let total be total + temperature pop readings into temperature if count is greater than 0 let mean be total over count let roundedMean be doRound taking mean let formatted be min + "/" + roundedMean + "/" + max let results be results plus name, "=" plus formatted if stationList at 0 (if this is not the last entry) let results be results plus ", " let name be pop stationList let results be results plus "}" #1BRC
204. @holly_cummins @hannotify #RedHat #InfoSupport “We’re halfway there! [with billion row challenge]”
205. @holly_cummins @hannotify #RedHat #InfoSupport “We’re halfway there! [with billion row challenge]” “I’m really-really halfway there! Working real soon now!
206. learning @holly_cummins @hannotify #RedHat #InfoSupport Engineers are terrible at estimation.
207. @holly_cummins @hannotify #RedHat #InfoSupport
208. @holly_cummins @hannotify #RedHat #InfoSupport “Holly, this happens every time. Why didn’t you learn from the last demo you took on?” -Holly’s husband
209. @holly_cummins @hannotify #RedHat #InfoSupport “Hanno, ben je nou nog steeds bezig? Je zou toch niet meer werken in het weekend?” -Hanno’s wife
210. demo @holly_cummins @hannotify #RedHat #InfoSupport ((Livin’ on A Prayer) the final demo Implementation based on one by Martijn Zuidweg
211. @holly_cummins @hannotify #RedHat #InfoSupport What good was any of this?
212. @holly_cummins @hannotify #RedHat #InfoSupport • Interoperability with other JVM languages • Leverage existing JVM libraries, such as Apache utils and lang4j • Your code can be set to music
213. @holly_cummins @hannotify #RedHat #InfoSupport Play is valuable.
214. @holly_cummins @hannotify #RedHat #InfoSupport Happiness increases productivity https:/ /hbr.org/2012/01/positive-intelligence
215. @holly_cummins @hannotify #RedHat #InfoSupport Happiness increases productivity “Your brain at positive is 31% more productive than your brain at negative, neutral or stressed. " https:/ /hbr.org/2012/01/positive-intelligence
216. @holly_cummins @hannotify #RedHat #InfoSupport Play increases productivity https://www2.warwick.ac.uk/fac/soc/economics/staff/eproto/ workingpapers/happinessproductivity.pdf
217. @holly_cummins @hannotify #RedHat #InfoSupport Play increases productivity "Individuals [who just watched a comedy video] have approximately 12% greater productivity." https://www2.warwick.ac.uk/fac/soc/economics/staff/eproto/ workingpapers/happinessproductivity.pdf
218. @holly_cummins @hannotify #RedHat #InfoSupport Play turns into practicality.
219. @holly_cummins @hannotify #RedHat #InfoSupport
220. @holly_cummins @hannotify #RedHat #InfoSupport Recap: How to run anything on Quarkus 1. Write a JVM Language 1. Write an Antlr grammar 2. Generate bytecode 2. Write a Quarkus extension 3. Write your programs 4. Find all the coding mistakes you made
221. @holly_cummins @hannotify #RedHat #InfoSupport … and what you’ll learn 1. Antlr is really useful 2. Friends don’t let friends use ASM 3. Holly should work harder on the Quarkus extension documentation 4. Making code rhyme is hard 5. LLMs cannot answer all questions. 6. Engineers are terrible at estimation
222. @holly_cummins @hannotify #RedHat #InfoSupport 🤘 slides https://hollycummins.com/rockstar-jfokus/ We got there!