Seven Languages In Seven Weeks Part II

Frank Kair

Transcript

1. Seven languages in seven weeks Part II Frank Kair
2. Agenda • Motivation • Review • Ruby
3. Motivation
4. Motivation
5. • Ruby • Io • Prolog • Scala • Erlang • Clojure • Haskell Motivation
6. Last time…
7. Erlang
8. Elixir
9. Ruby
10. Ruby
11. Ruby
12. Metaprogramming & some concepts
13. - Static vs Dynamic Some concepts
14. - Static vs Dynamic - Runtime Some concepts
15. Some concepts
16. - Static vs Dynamic - Runtime - Introspection & Reflection Some concepts
17. Example: Overload and Override
18. Example: Overload and Override Overload is static
19. Example: Overload and Override Overload is static Override is dynamic
20. Java has Garbage Collection (GC). Another example: Rust vs Java
21. Java has Garbage Collection (GC). Rust uses RAII (Resource Acquisition Is Initialization). Lifetime and scope based. Another example: Rust vs Java
22. Swift can allocate memory both on the stack and on the heap. One more example: Swift
23. Swift can allocate memory both on the stack and on the heap. Stack → Static, known size at compile time. One more example: Swift
24. Swift can allocate memory both on the stack and on the heap. Stack → Static, known size at compile time. struct {}. One more example: Swift
25. One more example: Swift Swift can allocate memory both on the stack and on the heap. Stack → Static, known size at compile time. Heap → Dynamic, unknown size at compile time, needs runtime to figure out object sizes.
26. Question: We just discussed struct and class, which one of the two should support inheritance and overriding? One more example: Swift
27. One more example: Swift Question: We just discussed struct and class, which one of the two should support inheritance and overriding? Note: Swift’s dynamics comes from Objective-C which was based on Smalltalk. Most of Swift’s modern flavors are now coming from static trends, such as Rust’s lifetime / RAII.
28. Objective-C Send
29. In Objective-C we send a message to an object. We don’t call a function from an object. Objective-C Send
30. Ruby & Metaprogramming
31. • Open class Ruby & Metaprogramming
32. • Open class • Eval Ruby & Metaprogramming
33. • Open class • Eval • Simple example Ruby & Metaprogramming
34. • Open class • Eval • Simple example • Inspect Ruby & Metaprogramming
35. • Open class • Eval • Simple example • Inspect • method_missing Ruby & Metaprogramming
36. Ruby & Metaprogramming • Open class • Eval • Simple example • Inspect • method_missing • send
37. Ruby & Metaprogramming • Open class • Eval • Simple example • Inspect • method_missing • send • define_method
38. Sneak peek
39. Sneak peek • Rust
40. Sneak peek • Rust • Swift
41. Thank you!