Around "Hello World" in 30 Days

Around Hello World in 30 Days David Eisinger // @deisinger DevNation Chicago // May 15, 2010

Around “Hello World” in 30 Days 1. The Motivation 2. The Methods 3. The Mindset 4. The Moral

Around “Hello World” in 30 Days 1. The Motivation About Me

Around “Hello World” in 30 Days 1. The Motivation Falling behind

Around “Hello World” in 30 Days 1. The Motivation O NOES Falling behind

Around “Hello World” in 30 Days 1. The Motivation Not on the job.

Around “Hello World” in 30 Days 1. The Motivation Keeping Up

Around “Hello World” in 30 Days 1. The Motivation The Great Demotivator

Around “Hello World” in 30 Days 1. The Motivation I love this town.

Around “Hello World” in 30 Days 2. The Method The Project

Around “Hello World” in 30 Days 2. The Method Making the list

Around “Hello World” in 30 Days 2. The Method The List Cassandra 10. HTML5 20. ooc 1. Chrome Extensions 11. Io 21. Redis 2. Clojure 12. Jekyll 22. Riak 3. CoffeeScript 13. jQTouch 23. Scala 4. CouchDB 14. Lua 24. Scheme 5. CSS3 15. MacRuby 25. Sinatra 6. Django 16. Mercurial 26. Squeak 7. Erlang 17. MongoDB 27. Treetop 8. Go 18. Node.js 28. VIM 9. Haskell 19. OCaml 29. ZSH

Around “Hello World” in 30 Days 2. The Method Thirteen Languages 1. Cassandra 11. HTML5 21. ooc 2. Chrome Extensions 12. Io 22. Redis 3. Clojure 13. Jekyll 23. Riak 4. CoffeeScript 14. jQTouch 24. Scala 5. CouchDB 15. Lua 25. Scheme 6. CSS3 16. MacRuby 26. Sinatra 7. Django 17. Mercurial 27. Squeak 8. Erlang 18. MongoDB 28. Treetop 9. Go 19. Node.js 29. VIM 10. Haskell 20. OCaml 30. ZSH

Around “Hello World” in 30 Days 2. The Method Thirteen Languages 1. Cassandra 11. HTML5 21. ooc 2. Chrome Extensions 12. Io 22. Redis 3. Clojure x 13. Jekyll 23. Riak 4. CoffeeScript 14. jQTouch 24. Scala 5. CouchDB 15. Lua 25. Scheme x 6. CSS3 16. MacRuby 26. Sinatra 7. Django 17. Mercurial 27. Squeak 8. Erlang x 18. MongoDB 28. Treetop 9. Go 19. Node.js 29. VIM 10. Haskell x 20. OCaml x 30. ZSH

Around “Hello World” in 30 Days 2. The Method Five Datastores 1. Cassandra 11. HTML5 21. ooc 2. Chrome Extensions 12. Io 22. Redis 3. Clojure 13. Jekyll 23. Riak 4. CoffeeScript 14. jQTouch 24. Scala 5. CouchDB 15. Lua 25. Scheme 6. CSS3 16. MacRuby 26. Sinatra 7. Django 17. Mercurial 27. Squeak 8. Erlang 18. MongoDB 28. Treetop 9. Go 19. Node.js 29. VIM 10. Haskell 20. OCaml 30. ZSH

Around “Hello World” in 30 Days 2. The Method Five Web Frameworks 1. Cassandra 11. HTML5 21. ooc 2. Chrome Extensions 12. Io 22. Redis 3. Clojure 13. Jekyll 23. Riak 4. CoffeeScript 14. jQTouch 24. Scala 5. CouchDB 15. Lua 25. Scheme 6. CSS3 16. MacRuby 26. Sinatra 7. Django 17. Mercurial 27. Squeak 8. Erlang 18. MongoDB 28. Treetop 9. Go 19. Node.js 29. VIM 10. Haskell 20. OCaml 30. ZSH

Around “Hello World” in 30 Days 2. The Method Seven Others 1. Cassandra 11. HTML5 21. ooc 2. Chrome Extensions 12. Io 22. Redis 3. Clojure 13. Jekyll 23. Riak 4. CoffeeScript 14. jQTouch 24. Scala 5. CouchDB 15. Lua 25. Scheme 6. CSS3 16. MacRuby 26. Sinatra 7. Django 17. Mercurial 27. Squeak 8. Erlang 18. MongoDB 28. Treetop 9. Go 19. Node.js 29. VIM 10. Haskell 20. OCaml 30. ZSH

Around “Hello World” in 30 Days 2. The Method The Hour

Around “Hello World” in 30 Days 2. The Method The Buddy System

Around “Hello World” in 30 Days 2. The Method The Fold

Around “Hello World” in 30 Days 2. The Method WTF’s a fold? # sum an array of numbers [1, 2, 3, 4, 5].inject {|sum, i| sum + i } # => 15

Around “Hello World” in 30 Days 2. The Method WTF’s a fold? # collect an array of squares [1, 2, 3, 4, 5].inject([]) do |coll, i| coll + [i * i] end # => [1, 4, 9, 16, 25]

Around “Hello World” in 30 Days 2. The Method C0ffeeScript fold: (values, lambda, init...) -> if init[0]? result = init[0] else result = values[0] values = values[1..values.length] for value in values result = lambda(result, value) result

Around “Hello World” in 30 Days 2. The Method C0ffeeScript sum: (values...) -> fold values, (a, b) -> a + b x: sum 1, 2, 3, 4, 5 // x == 15

Around “Hello World” in 30 Days 2. The Method C0ffeeScript (function(){ var fold; var __slice = Array.prototype.slice; fold = function fold(values, lambda) { var _a, _b, _c, _d, init, result, value; init = __slice.call(arguments, 2, arguments.length - 0); if ((typeof (_a = init[0]) !== "undefined" && _a !== null)) { result = init[0]; } else { result = values[0]; values = values.slice(1, values.length + 1); } ...

Around “Hello World” in 30 Days 2. The Method Lua function fold(values, lambda, init) index, value = next(values, nil) if init then result = init else result = value index, value = next(values, index) end

Around “Hello World” in 30 Days 2. The Method Lua

Around “Hello World” in 30 Days 2. The Method Lua while index do result = lambda(result, value) index, value = next(values, index) end return result end

Around “Hello World” in 30 Days 2. The Method Lua function sum(values) return fold(values, function (a, b) return a + b end) end -- sum the set of numbers sum({1, 2, 3, 4})

Around “Hello World” in 30 Days 2. The Method Lua function map(values, lambda) return fold(values, function (c, i) c[i] = lambda(i) return c end, {}) end -- get the list of squares map({1, 2, 3, 4}, function (x) return x * x end)

Around “Hello World” in 30 Days 2. The Method Scheme (define fold (lambda (arr f result) (cond ((null? arr) result) (else (fold (cdr arr) f (f result (car arr)))))))

Around “Hello World” in 30 Days 2. The Method Scheme (define fold (lambda (arr f . result) (cond ((and (null? arr) (null? result) `())) ((null? arr) (car result)) ((null? result) (fold (cdr arr) f (car arr))) (else (fold (cdr arr) f (f (car result) (car arr)))))))

Around “Hello World” in 30 Days 2. The Method Scheme > (fold `(1 2 3 4) (lambda (x y) (+ x y))) 10 > (fold `(1 2 3 4) (lambda (squares x) (cons (* x x) squares)) `()) (16 9 4 1)

Around “Hello World” in 30 Days 2. The Method Erlang -module(fold). -export([fold/2, fold/3]). fold([First | Rest], Fun, Result) -> fold(Rest, Fun, Fun(Result, First)); fold([], Fun, Result) -> Result.

Around “Hello World” in 30 Days 2. The Method Erlang

Around “Hello World” in 30 Days 2. The Method Erlang fold([First | Rest], Fun) -> fold(Rest, Fun, First); fold([], Fun) -> []. % > fold:fold([1,2,3], fun(Sum, Item) -> Sum + Item end). % 6

Around “Hello World” in 30 Days 2. The Method The Blog

Around “Hello World” in 30 Days 3. The Mindset Mastery

Around “Hello World” in 30 Days 3. The Mindset Flow

Around “Hello World” in 30 Days 3. The Mindset

Around “Hello World” in 30 Days 3. The Mindset Grit

Around “Hello World” in 30 Days 3. The Mindset Intelligence (Incremental vs. Entity)

Around “Hello World” in 30 Days 3. The Mindset Hard Work

Around “Hello World” in 30 Days 4. The Moral Biggest Surprise:

Around “Hello World” in 30 Days 4. The Moral Biggest Surprise: CoffeeScript

Around “Hello World” in 30 Days 4. The Moral Biggest Disappointment:

Around “Hello World” in 30 Days 4. The Moral Biggest Disappointment: CouchDB

Around “Hello World” in 30 Days 4. The Moral Biggest Success:

Around “Hello World” in 30 Days 4. The Moral Biggest Success: Erlang

Around “Hello World” in 30 Days 4. The Moral Most Value:

Around “Hello World” in 30 Days 4. The Moral Most Value: Redis

Around “Hello World” in 30 Days 4. The Moral Best Docs:

Around “Hello World” in 30 Days 4. The Moral Best Docs: Sinatra

Around “Hello World” in 30 Days 4. The Moral

Around “Hello World” in 30 Days 4. The Moral Most Bewildering:

Around “Hello World” in 30 Days 4. The Moral Most Bewildering: Cassandra

Around “Hello World” in 30 Days 4. The Moral Most Fun:

Around “Hello World” in 30 Days 4. The Moral Most Fun: Scheme

Around “Hello World” in 30 Days 4. The Moral Start Small

Around “Hello World” in 30 Days 4. The Moral Start Now

Around “Hello World” in 30 Days 4. The Moral What was missing?

Around “Hello World” in 30 Days 4. The Moral What was missing? Strongly-typed languages are hard.

Around “Hello World” in 30 Days 4. The Moral Make (& Take) The Time

Around “Hello World” in 30 Days 4. The Moral Stick It Out

Around “Hello World” in 30 Days 4. The Moral Cut & Run

Around “Hello World” in 30 Days 4. The Moral Share Your Experiences

Around “Hello World” in 30 Days 4. The Moral Make Programming Play

Around “Hello World” in 30 Days Thanks! http://speakerrate.com/talks/3249 @deisinger

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Around "Hello World" in 30 Days

by David Eisinger on May 15, 2010

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Around "Hello World" in 30 Days — Presentation Transcript