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the future of development
are our jobs getting
harder or easier?
Dr Holly Cummins
Senior Principal Software Engineer, Quarkus
@[email protected]
Red Hat
Voxxed Days Thessaloniki
October 19, 2024
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@holly_cummins
#RedHat
hi!
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@holly_cummins
#RedHat
senior principal software engineer
hi!
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@holly_cummins
#RedHat
senior principal software engineer
helping to build Quarkus
hi!
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@holly_cummins #RedHat
Caused by: java.io.IOException: Invalid Magic
at org.jboss.jandex.Indexer.verifyMagic(Indexer.java:2090)
at org.jboss.jandex.Indexer.indexWithSummary(Indexer.java:2479)
at org.jboss.jandex.Indexer.index(Indexer.java:2452
true story
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@holly_cummins #RedHat
Caused by: java.io.IOException: Invalid Magic
at org.jboss.jandex.Indexer.verifyMagic(Indexer.java:2090)
at org.jboss.jandex.Indexer.indexWithSummary(Indexer.java:2479)
at org.jboss.jandex.Indexer.index(Indexer.java:2452
true story
Invalid Magic?!
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@holly_cummins #RedHat
we didn’t always have magic
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@holly_cummins #RedHat
punched cards
1804 - 1960s
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@holly_cummins #RedHat
https://github.com/chrislgarry/Apollo-11/blob/master/Comanche055/IMU_COMPENSATION_PACKAGE.agc
1969
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@holly_cummins #RedHat
TCF 1/PIPA1 +1
NOOP # LESS THAN ZERO IMPOSSIBLE.
RELINT
# Page 299
IRIGCOMP TS GCOMPSW # INDICATE COMMANDS 2 PULSES OR LESS.
TS BUF # INDEX COUNTER - IRIGX, IRIGY, IRIGZ.
IRIGX EXTEND
DCS DELVX # (PIPA PULSES) X 2(+14)
DXCH MPAC
CA ADIAX # (GYRO PULSES)/(PIPA PULSE) X 2(-3) *
TC GCOMPSUB # -(ADIAX)(PIPAX) (GYRO PULSES) X 2(+14)
EXTEND #
DCS DELVY # (PIPA PULSES) X 2(+14)
DXCH MPAC #
CS ADSRAX # (GYRO PULSES)/(PIPA PULSE) X 2(-3) *
TC GCOMPSUB # +(ADSRAX)(PIPAY) (GYRO PULSES) X 2(+14)
# EXTEND # ***
# DCS DELVY # *** (PIPA PULSES) X 2(+14)
# DXCH MPAC # ***
# CA ADOAX # *** (GYRO PULSES)/(PIPA PULSE) X 2(-3) *
# TC GCOMPSUB # *** -(ADOAX)(PIPAZ) (GYRO PULSES) X 2(+14)
CS NBDX # (GYRO PULSES)/(CS) X 2(-5)
TC DRIFTSUB # -(NBDX)(DELTAT) (GYRO PULSES) X 2(+14)
IRIGY EXTEND
DCS DELVY # (PIPA PULSES) X 2(+14)
DXCH MPAC
CA ADIAY # (GYRO PULSES)/(PIPA PULSE) X 2(-3) *
TC GCOMPSUB # -(ADIAY)(PIPAY) (GYRO PULSES) X 2(+14)
EXTEND
DCS DELVZ # (PIPA PULSES) X 2(+14)
DXCH MPAC
CS ADSRAY # (GYRO PULSES)/(PIPA PULSE) X 2(-3) *
TC GCOMPSUB # +(ADSRAY)(PIPAZ) (GYRO PULSES) X 2(+14)
# EXTEND # ***
# DCS DELVX # *** (PIPA PULSES) X 2(+14)
# DXCH MPAC # ***
https://github.com/chrislgarry/Apollo-11/blob/master/Comanche055/IMU_COMPENSATION_PACKAGE.agc
1969
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@holly_cummins #RedHat
1974
image courtesy of Smithsonian Institute, https://americanhistory.si.edu/collections/search/object/nmah_334396
altair 8800
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@holly_cummins #RedHat
1974
image courtesy of Smithsonian Institute, https://americanhistory.si.edu/collections/search/object/nmah_334396
altair 8800
switches for input
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@holly_cummins #RedHat
1974
image courtesy of Smithsonian Institute, https://americanhistory.si.edu/collections/search/object/nmah_334396
altair 8800
light bulbs for output
switches for input
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@holly_cummins #RedHat
java
1995
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@holly_cummins #RedHat
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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@holly_cummins #RedHat
“meta-programming”
large language models + prompt engineering
2023
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our modern stack
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application
our modern stack
1843
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transistor networks
application
our modern stack
1947
1843
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transistor networks
application
machine codes
our modern stack
1947
1940s
1843
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transistor networks
application
assembler
machine codes
our modern stack
1947
1940s
1947
1843
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transistor networks
application
high-level language
assembler
machine codes
our modern stack
1947
1940s
1956
1947
1843
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transistor networks
application
high-level language
assembler
machine codes
libraries
our modern stack
1947
1940s
1956
1947
1960s
1843
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
our modern stack
1947
1940s
1956
1947
1990s
1960s
1843
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
our modern stack
ai coding assistant
1947
1940s
1956
1947
1990s
1960s
2020s
1843
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
our modern stack
ai coding assistant
abstraction
1947
1940s
1956
1947
1990s
1960s
2020s
1843
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@holly_cummins #RedHat
the story of
our industry is
increasing abstraction
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@holly_cummins #RedHat
the story of
our industry is
increasing abstraction
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@holly_cummins #RedHat
the story of
our industry is
increasing abstraction
not everyone is
happy about that
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@holly_cummins
#RedHat
package com.example;
import org.jboss.logging.Logger;
public class MyService {
private static final Logger log = Logger.getLogger(MyService.class);
public void doSomething() {
log.info("It works!");
}
}
example: quarkus logging
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@holly_cummins
#RedHat
package com.example;
import org.jboss.logging.Logger;
public class MyService {
private static final Logger log = Logger.getLogger(MyService.class);
public void doSomething() {
log.info("It works!");
}
}
example: quarkus logging
import io.quarkus.logging.Log;
Log
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
“horrible”
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@holly_cummins #RedHat
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@holly_cummins #RedHat
if one is not able to write a simple
code and depends on generated
code, then he is not a developer
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#RedHat
why would people dislike abstraction?
they say
higher abstraction
means stupider
developers*
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
developer
skill?
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@holly_cummins #RedHat
gate-
keeping
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@holly_cummins #RedHat
people used to say
the same thing about
garbage collection
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@holly_cummins #RedHat
“Avoid using any language that uses
‘garbage collection’ memory
management. It teaches bad habits and
makes for lazy, sloppy engineers.”
–anonymous, 2005
“
http://ex-mentis.blogspot.com/2006/05/are-paul-graham-and-joel-spolsky-right.html
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@holly_cummins #RedHat
“when programmers rely on a GC
implementation to clean up their
mess, they become lazy.”
–M., 2006
www.skyos.org/board/viewtopic.php?p=91820&sid=e56df2df37ff899da22c8ace
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@holly_cummins #RedHat
“Garbage collection encourages lazy
programming habits, which I’ve seen
in quite a few Java developers.”
– anonymous, 2006
https://slashdot.org/story/06/08/07/2126253/xcode-update-gives-objective-c-garbage-collection
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@holly_cummins #RedHat
rust
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@holly_cummins #RedHat
rust
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@holly_cummins #RedHat
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@holly_cummins #RedHat
garbage collection users were more likely
to complete the task in the time available,
and those who did so required only about a
third as much time (4 hours vs. 12 hours)
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#RedHat
why would people dislike abstraction?
they say
higher abstraction
means slower code*
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
execution
speed
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“higher level languages are slower”
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- not true*
“higher level languages are slower”
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- not true*
“higher level languages are slower”
*mostly
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- not true*
“higher level languages are slower”
*mostly
*sometimes
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- not true*
- irrelevant even if true
“higher level languages are slower”
*mostly
*sometimes
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@holly_cummins #RedHat
Java can be
faster than C
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No content
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No content
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No content
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No content
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<10%
speed diff
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@holly_cummins #RedHat
Quarkus can be
faster than plain Java
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
how does this happen?
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
how does this happen?
smart people dig down
the stack, so we don’t
have to
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@holly_cummins #RedHat
mechanical sympathy
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@holly_cummins #RedHat
example:
quarkus’s (re)discovery of
the jvm type pollution bug
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@holly_cummins
Francesco Nigro and Andrew Haley read
20,000 lines
of ASM
ASM
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@holly_cummins #RedHat
private static int extractSize(Object it) {
if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
} else if (it.getClass().isArray()) {
return Array.getLength(it);
} else if (it instanceof Integer) {
return ((Integer) it);
}
return 10;
}
// Note that we intentionally use "instanceof" to test interfaces as the last resort in order to mitigate the "type pollution”
// See https://github.com/RedHatPerf/type-pollution-agent for more information
if (it instanceof AbstractCollection) {
return ((AbstractCollection>) it).size();
} else if (it instanceof AbstractMap) {
return ((AbstractMap, ?>) it).size();
} else if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
}
return 10;
}
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@holly_cummins #RedHat
private static int extractSize(Object it) {
if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
} else if (it.getClass().isArray()) {
return Array.getLength(it);
} else if (it instanceof Integer) {
return ((Integer) it);
}
return 10;
}
// Note that we intentionally use "instanceof" to test interfaces as the last resort in order to mitigate the "type pollution”
// See https://github.com/RedHatPerf/type-pollution-agent for more information
if (it instanceof AbstractCollection) {
return ((AbstractCollection>) it).size();
} else if (it instanceof AbstractMap) {
return ((AbstractMap, ?>) it).size();
} else if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
}
return 10;
}
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@holly_cummins #RedHat
private static int extractSize(Object it) {
if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
} else if (it.getClass().isArray()) {
return Array.getLength(it);
} else if (it instanceof Integer) {
return ((Integer) it);
}
return 10;
}
// Note that we intentionally use "instanceof" to test interfaces as the last resort in order to mitigate the "type pollution”
// See https://github.com/RedHatPerf/type-pollution-agent for more information
if (it instanceof AbstractCollection) {
return ((AbstractCollection>) it).size();
} else if (it instanceof AbstractMap) {
return ((AbstractMap, ?>) it).size();
} else if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
}
return 10;
}
not a fan of the fix
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@holly_cummins #RedHat
private static int extractSize(Object it) {
if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
} else if (it.getClass().isArray()) {
return Array.getLength(it);
} else if (it instanceof Integer) {
return ((Integer) it);
}
return 10;
}
// Note that we intentionally use "instanceof" to test interfaces as the last resort in order to mitigate the "type pollution”
// See https://github.com/RedHatPerf/type-pollution-agent for more information
if (it instanceof AbstractCollection) {
return ((AbstractCollection>) it).size();
} else if (it instanceof AbstractMap) {
return ((AbstractMap, ?>) it).size();
} else if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
}
return 10;
}
not a fan of the fix
non-idiomatic
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@holly_cummins #RedHat
private static int extractSize(Object it) {
if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
} else if (it.getClass().isArray()) {
return Array.getLength(it);
} else if (it instanceof Integer) {
return ((Integer) it);
}
return 10;
}
// Note that we intentionally use "instanceof" to test interfaces as the last resort in order to mitigate the "type pollution”
// See https://github.com/RedHatPerf/type-pollution-agent for more information
if (it instanceof AbstractCollection) {
return ((AbstractCollection>) it).size();
} else if (it instanceof AbstractMap) {
return ((AbstractMap, ?>) it).size();
} else if (it instanceof Collection) {
return ((Collection>) it).size();
} else if (it instanceof Map) {
return ((Map, ?>) it).size();
}
return 10;
}
not a fan of the fix
non-idiomatic
difficult to maintain
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@holly_cummins #RedHat
normal, not-weird code is most optimisable by the JIT
do not try this at home
JIT makes things fast
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@holly_cummins #RedHat
does higher level stuff
make my job easier?
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@holly_cummins #RedHat
does higher level stuff
make my job better?
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#RedHat
@holly_cummins
it depends.
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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#RedHat
@holly_cummins
forward progress
is not inevitable.
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#RedHat
@holly_cummins
yaml
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
countries:
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#RedHat
@holly_cummins
countries:
- GR
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#RedHat
@holly_cummins
countries:
- GR
- SE
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#RedHat
@holly_cummins
countries:
- GR
- SE
- NO
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#RedHat
@holly_cummins
countries:
- GR
- SE
- NO
{'countries': ['GR', 'SE', False]}
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#RedHat
@holly_cummins
countries:
- GR
- SE
- NO
{'countries': ['GR', 'SE', False]}
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#RedHat
@holly_cummins
countries:
- GR
- SE
- NO
{'countries': ['GR', 'SE', False]}
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#RedHat
@holly_cummins
countries:
- GR
- SE
- NO
{'countries': ['GR', 'SE', False]}
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
java
1995
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#RedHat
@holly_cummins
java enterprise java beans
1995 1999
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“my web site has no frameworks”
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No content
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@holly_cummins #RedHat
Greenspun's tenth rule of programming
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@holly_cummins #RedHat
“Any sufficiently complicated C or Fortran
program contains an ad hoc, informally-
specified, bug-ridden, slow
implementation of half of Common Lisp."
Greenspun's tenth rule of programming
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@holly_cummins #RedHat
“those who forget the past are
condemned to repeat it”
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@holly_cummins #RedHat
“those who reject frameworks are
condemned to reinvent them”
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@holly_cummins #RedHat
“those who reject frameworks are
condemned to reinvent them”
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@holly_cummins #RedHat
choose the right framework
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
cognitive load
ai coding assistant
machine codes
assembler
high-level language
libraries
framework
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#RedHat
@holly_cummins
choosing a
programming language
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#RedHat
@holly_cummins
choosing a
programming language
1963
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
R
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
R
Kotlin
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
R
Kotlin
Ruby
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
R
Kotlin
Ruby
Rust
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#RedHat
@holly_cummins
choosing a
programming language
1963
Fortan
ALGOL
COBOL
LISP
2023
Python
C
C++
Java
C#
JavaScript
Visual Basic
PHP
SQL
Assembly
Go
Scratch
Pascal
MATLAB
Swift
Fortran
R
Kotlin
Ruby
Rust
…
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#RedHat
@holly_cummins
and if you’re using javascript …
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#RedHat
@holly_cummins
and if you’re using javascript …
1,300,000
libraries in npm registry
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#RedHat
@holly_cummins
and if you’re using javascript …
1,300,000
libraries in npm registry
2,0
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No content
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@holly_cummins
#RedHat
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
ease
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@holly_cummins
#RedHat
the ai-lephant
in the room
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@holly_cummins #RedHat
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@holly_cummins #RedHat
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@holly_cummins
#RedHat
video courtesy of
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@holly_cummins #RedHat
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@holly_cummins #RedHat
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@holly_cummins #RedHat
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@holly_cummins #RedHat
quarkus + chat gpt
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@holly_cummins #RedHat
quarkus + chat gpt
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@holly_cummins #RedHat
quarkus + chat gpt
this is wrong in every way
(there is no quinoa cli, and having one would be a bad design)
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@holly_cummins #RedHat
quarkus + chat gpt
this is wrong in every way
(there is no quinoa cli, and having one would be a bad design)
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@holly_cummins #RedHat
quarkus + chat gpt
this is wrong in every way
(there is no quinoa cli, and having one would be a bad design)
this is not necessary
(it misses a major quarkus usability feature)
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@holly_cummins #RedHat
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
70%
unnecessary code
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#RedHat
@holly_cummins
“lines of code” is not a good
productivity metric for people.
or machines.
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#RedHat
@holly_cummins
copilot users accepted
30% of its suggestions
copilot produced
40% of the codebase
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#RedHat
@holly_cummins
copilot users accepted
30% of its suggestions
copilot produced
40% of the codebase
uh oh, what does that say about
the information density?
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#RedHat
@holly_cummins
if code is so boring a machine can
predict it, maybe it shouldn’t be there?
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#RedHat
@holly_cummins
10:1
writing
code
reading
code
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#RedHat
@holly_cummins
10:1
200:1
writing
code
reading
code
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#RedHat
@holly_cummins
do we really want to read loads of
software-generated boilerplate?
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#RedHat
@holly_cummins
better example:
letting computers do the
hard work with quarkus
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#RedHat
@holly_cummins
io.quarkus
quarkus-jdbc-postgresql
pom.xml
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#RedHat
@holly_cummins
we see you will be
using a database
io.quarkus
quarkus-jdbc-postgresql
pom.xml
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#RedHat
@holly_cummins
we see you will be
using a database
we see you do not
have one
io.quarkus
quarkus-jdbc-postgresql
pom.xml
# This config deliberately left empty
application.properties
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#RedHat
@holly_cummins
we see you will be
using a database
we see you do not
have one
io.quarkus
quarkus-jdbc-postgresql
pom.xml
# This config deliberately left empty
application.properties
we’ll just sort one
out for you
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#RedHat
@holly_cummins
ai can help us read code
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ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-SALARY PIC 9(7)V99 VALUE
01 WS-DATE PIC 9(8).
01 WS-MONTH PIC 99.
01 WS-YEAR PIC 9999.
01 WS-PAYMENT-MADE PIC X(3) VALUE 'NO
PROCEDURE DIVISION.
MAIN-PROCEDURE.
PERFORM INITIALIZE-DATA
PERFORM CHECK-PAYMENT
PERFORM DISPLAY-RESULT
STOP RUN.
example:
using chat-gpt to document a legacy codebase
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ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-SALARY PIC 9(7)V99 VALUE
01 WS-DATE PIC 9(8).
01 WS-MONTH PIC 99.
01 WS-YEAR PIC 9999.
01 WS-PAYMENT-MADE PIC X(3) VALUE 'NO
PROCEDURE DIVISION.
MAIN-PROCEDURE.
PERFORM INITIALIZE-DATA
PERFORM CHECK-PAYMENT
PERFORM DISPLAY-RESULT
STOP RUN.
example:
using chat-gpt to document a legacy codebase
the
documentation
chat-gpt wrote is
wrong!
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ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 WS-SALARY PIC 9(7)V99 VALUE
01 WS-DATE PIC 9(8).
01 WS-MONTH PIC 99.
01 WS-YEAR PIC 9999.
01 WS-PAYMENT-MADE PIC X(3) VALUE 'NO
PROCEDURE DIVISION.
MAIN-PROCEDURE.
PERFORM INITIALIZE-DATA
PERFORM CHECK-PAYMENT
PERFORM DISPLAY-RESULT
STOP RUN.
example:
using chat-gpt to document a legacy codebase
the
documentation
chat-gpt wrote is
wrong! umm
… actually, the code
doesn’t do what we
thought it did
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ai-generated code may
not even be faster to write
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@holly_cummins
#RedHat
programming in
diagrams instead
of words turns out
to be a lot of work
remember model-driven development?
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@holly_cummins
#RedHat
it took 4 different prompts
for my chat-gpt screenshot
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@holly_cummins
#RedHat
“I tried being exhaustive with explanations about things like
the data range, input shapes and reasons for parameters,
and with enough explanation it will eventually come to the
right conclusions - but it’s far more effort to exhaustively
explain what I need than to just write the code”
https://news.ycombinator.com/item?id=34848353
example: copilot
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
26%
speed-up
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@holly_cummins
#RedHat
26%
speed-up
(junior devs)
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@holly_cummins
#RedHat
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@holly_cummins
#RedHat
senior devs
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@holly_cummins
#RedHat
~0%
speed-up
senior devs
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
cognitive load
ai coding assistant
machine codes
assembler
high-level language
libraries
framework
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#RedHat
@holly_cummins
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
devops
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
devops
devsecops
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
devops
devsecops
devbizops
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
devops
devsecops
devbizops
devsecbizops
things you
need to do
well in 2024:
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#RedHat
@holly_cummins
apps
ops
devops
devsecops
devbizops
devsecbizops
finops
things you
need to do
well in 2024:
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
quality
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security quality
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability quality
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations quality
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations usab
quality
shift left
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations usab
quality
ud bills
shift left
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#RedHat
@holly_cummins
shift down
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#RedHat
@holly_cummins
shift down
let platforms do the work
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations usab
quality
ud bills
shift down
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations
usability quality
cloud bills
shift down
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations
usability
quality
cloud bills
shift down
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transistor networks
framework
application
high-level language
assembler
machine codes
libraries
ai coding assistant
security
observability
operations
usability
quality
cloud bills
shift down
value
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#RedHat
@holly_cummins
the big
question
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#RedHat
@holly_cummins
will ai take our jobs?
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#RedHat
@holly_cummins
will ai take our jobs?
NO.
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
machine codes
vacuum tube networks
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
assembler
machine codes
vacuum tube networks
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
transistor networks
assembler
machine codes
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
transistor networks
high-level languages
assembler
machine codes
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
transistor networks
high-level languages
assembler
machine codes
libraries
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
transistor networks
frameworks
high-level languages
assembler
machine codes
libraries
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#RedHat
@holly_cummins
professional developers in the world
https://www.statista.com/statistics/627312/worldwide-developer-population/
https://slashdata-website-cms.s3.amazonaws.com/sample_reports/EiWEyM5bfZe1Kug_.pdf
transistor networks
frameworks
high-level languages
assembler
machine codes
libraries
ai coding assistants
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#RedHat
@holly_cummins
software is not going away
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human alarm clock
“knocker-up”
1800s
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human alarm clock
1800s
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human alarm clock
1800s - 1940s
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human alarm clock
1800s
finite demand
- 1940s
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human alarm clock
1800s
finite demand
only employees need waking up
- 1940s
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human alarm clock
1800s
finite demand
only employees need waking up
no one needs waking up more than once
- 1940s
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#RedHat
@holly_cummins
the more software we
have, the more we want
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#RedHat
@holly_cummins
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#RedHat
@holly_cummins
software to do stuff
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
software to try and avoid skynet
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
software to try and avoid skynet
software to tell people about software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
software to try and avoid skynet
software to tell people about software
software to work out the meaning of life
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
software to try and avoid skynet
software to tell people about software
software to work out the meaning of life
software to gamify software
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#RedHat
@holly_cummins
software to do stuff
software to do more stuff
software to bypass advertisements in the software
software to bypass the bypass software so ads still show
software to monitor the software
software to debug the software
software to manage the software
software to write the software
software to manage the software that writes the software
software to try and avoid skynet
software to tell people about software
software to work out the meaning of life
software to gamify software
…
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#RedHat
@holly_cummins
will the productivity
expectation be higher?
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#RedHat
@holly_cummins
will the productivity
expectation be higher?
probably
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#RedHat
@holly_cummins
will we spend more time
debugging generated code?
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#RedHat
@holly_cummins
will we spend more time
debugging generated code?
probably :)
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@holly_cummins #RedHat
tl;dpa
(too long; didn’t pay attention)
abstraction is good.
shift down, to make shifting left easier
don’t generate boilerplate, eliminate it
coding assistants are great at … typing
it is awesome being a developer
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slides
thank you
Holly Cummins
Red Hat
https://hollycummins.com/jobs-harder-easier-voxxed-thessaloniki/
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slides
thank you
Holly Cummins
Red Hat
https://hollycummins.com/jobs-harder-easier-voxxed-thessaloniki/
stickers!!