LittleSmallscript

LittleSmallscript the language compiles into JavaScript.

http://ympbyc.github.com/LittleSmallscript

Transcript

1. LittleSmallscript
2. Minori Yamashita <ympbyc@gmail.com>
3. LittleSmallscript
4. LittleSmallscript Little Smalltalk Smalltalk-80 to your terminal http://smalltalk.org/versions/LittleSmalltalk.html ・Minimal ・Subset of Smalltalk-80 language ・No graphical VM ・Scopes of instance variables ・Cascade ・Class syntax (v5)
5. LittleSmallscript Smalltalk-80 Dynamic Class-based Object Oriented Language http://en.wikipedia.org/wiki/Smalltalk ・Graphical VM ・Many forks ・Squeak ・Pharo ・Visual Works ... ・Syntax
6. LittleSmallscript Javascript Dynamic Prototype-based Object Oriented Language https://developer.mozilla.org/en-US/docs/JavaScript ・Web ・Server ・Mobile ・Everywhere ・Objects ・Libraries
7. Code
8. Object subclass:#Animal variables:#(#name). !Animal setName: nm name := nm !. !Animal move: metre console log: name + ' moved ' + metre + 'm' !. Animal subclass:#Snake variables:#(). !Snake move console log: 'Slithering...'. Snake super:#move arguments:#(5) !. Snake new; setName:'Sammy the Python'; move
9. Feature
10. Feature 1. Syntax that is similar to Smalltalk's chunk format 2. Use Javascript functions and methods ・forEach, $, Object#keys ... 3. Compiles into clean JavaScript ・Human readable ・Easy to fallback to native JS
11. Why LittleSmallscript?
12. No C
13. for (i = 0; i < 5; ++i) { alert(i); } while (x < 5) { --x } try {} catch (err) {err}
14. for (i = 0; i < 5; ++i) { alert(i); } while (x < 5) { --x } try {} catch (err) {err}
15. (0 to:4) do:[:i| alert value:i ] [x < 5] whileTrue:[ x -= 1 ] [ ] tryCatch:[:err|err]
16. (0 to:4) do:[:i| alert value:i ] [x < 5] whileTrue:[ x -= 1 ] [ ] tryCatch:[:err|err]
17. Just self No self=this
18. Just !X y ...! No X.prototype.y
19. littlesmallscript --watch Compile in no time
20. LittleSmallscript
21. http://ympbyc.github.com/LittleSmallscript