Ruby and japanese

RUBY AND JAPANESE Makoto Inoue LRUG December 2010

WHO ARE WE (NORMAL)?

WHO ARE WE(TODAY)?

ME @ RUBYKAIGIhere http://image.gihyo.co.jp/assets/images/news/report/01/rubykaigi2010/0003/thumb/TH400_IMG_1253.jpg

TOPICBasic JapaneseObject Oriented (OO)FunctionalJapanese Programming in Ruby

BASIC JAPANESE Step 1

WATASHI HA RUBY GA SUKI DESU Kanji Katakana HiraganaKanji eg: ,Katakana eg:Hiragana eg: , ,

HiraganaKatakana Each Japanese alphabet is a combination of vowels(a,i,u,e,o) and consonants(k,s,t,n,h,m,y,r,w). Total of Hiragana and Katakana are 46 each. The number of possible Kanji in use in Japan is around 50,000 , though around 2000 ~ 3000 are in common use.

Kanji => Hiragana KanjiHiragana

Kanji Kanji => KatakanaKatakana

WHAT’S YOUR NAME? How JapaneseAlphabet interpret Katakana Hiragana Kanji Makoto makoto Vivian bibiann Oliver oriba- Max makkusu

BUILD YOUR OWN http://kanji-fandom.com/

WHY SO MANY WAYS?Kanji = To import Chinese wordsHiragana = To suit for domestic useKatakana = To adopt new words

WHY SO MANY WAYS?To import OO & FunctionalTo suit for ScriptingTo adopt New Concepts

OBJECT ORIENTED Step 2

JAPANESE & OOhttp://satoshi.blogs.com/life/2004/09/post.html

ENGLISH (SVO) I like RubySubject Verb Object

(SOV)Watashi ha Ruby ga Suki desu Subject Object VerbI Ruby Like

CUI(SVO)

GUI(SOV)http://satoshi.blogs.com/life/2004/09/post.html

RUBY# Proceduralopen("box")open("car")# OOBox.new.openCar.new.open

FUNCTIONAL Step 3

Japanese is a politicians language Makoto Inoue (Me) - 2010

POLITICIAN....does not commit to anything unlessnecessarymeans different things depending oncontext

PREPOSITIONSprepositionnoun Grammara word governing, and usually preceding, anoun or pronoun and expressing a relationto another word or element in the clause,as in “the man on the platform,” “shearrived after dinner,” “what did you do itfor you

POSTPOSITIONSpostpositionnoun Grammara word or morpheme placed after theword it governs, for example -ward inhomeward.

POSTPOSITIONS IN JAPANESE S OWatashi ha Ruby ga Suki desu(I Ruby Like) O SRuby ga Watashi ha Suki desu(Ruby I Like) ORuby ga Suki desu(Ruby Like) Postposition is used to decide the role of noun which it supports. This enables you to change the order of structure very flexibly, chain as many sentence as you like, and also let you to omit subject.

ABUSING POSTPOSITIONS Don’t Read !! ” ” Confusing, vague, and long sentence without much point (Could be powerful)

FUNCTIONALLazy evaluationhigh order function

RUBY % 10000.timesEnumerable => #<Enumerator: 10000:times>Arel User.order(users.id DESC).limit(20).includes(:items)Block File.open("/tmp.txt").each do |line| puts line end

JAPANESE PROGRAMMING IN RUBYRUBY1.9 https://github.com/makoto/japanize Step 4

DEMOhttp://screenr.com/F9L

GRAMMAR# -*- encoding: utf-8 -*-module Japanize module Grammar VERBS = { => :+, # tasu => :-, # hiku => :*, # kakeru => :/, # waru } POSTPOSITIONAL_PARTICLES = [ , , , ] def ; POSTPOSITIONAL_PARTICLES; end def ; NUMBERS; end def ; VERBS; end

GRAMMAR# -*- encoding: utf-8 -*-def parse @sequence.split().map do |s| s.split(/#{ .join("|")}/) end.flatten.map do |s| if [s] [s] elsif [s[0]] NumberConverter.convert(s) end endend

PARSER# -*- encoding: utf-8 -*-describe Parser do it "must divide a phrase into words" do Parser.new(" "). parse.must_equal [1, 2, :+, 4, :*] endend

GOOGLE TRANSLATION

EVALUATORdescribe Evaluator do it "must calculate all operands" do Evaluator.new([1, 2, :+, 3 , :* , 1, :-, 2, :/]). evaluate.must_equal ((((1+2) * 3) - 1 ) / 2) endend

REVERSE POLISH NOTATION [1, 2, :+, 3 , :* , 1, :-, 2, :/]http://en.wikipedia.org/wiki/Reverse_Polish_notation

RubiMaVM RUBY VM ON RUBYhttp://jp.rubyist.net/magazine/?0007-YarvManiacs

METHOD MISSING# -*- encoding: utf-8 -*-def method_missing (*obj) if [obj[0][0]] parsed = Parser.new(obj[0].to_s).parse Evaluator.new(parsed).evaluate else super endend

SO WHAT? :-)

WHY SO MANY WAYS?To import OO & FunctionalTo suit for ScriptingTo adopt New Concepts

MATZ @ SAPPORO RUBY KAIGI http://regional.rubykaigi.org/sapporo03”In future, I want Ruby to keep being the lightwhich brings new concepts and ideas to people.I also would like people to see such light, add theirown, and spread it to other people.” http://igarashikuniaki.net/tdiary/20101205.html

WHAT CAN YOU DO? http://www.igvita.com/2010/12/02/concurrency-with-actors-goroutines-ruby/http://www.pragprog.com/titles/btlang/seven-languages-in-seven-weeks http://www.rubyinside.com/ruby-refinements-an-overview-of-a-new-proposed-ruby-feature-3978.html http://rubykaigi.org/2011/en

MERRY CHRISTMAS &HAVE A HAPPY NEW YEAR!! & !! hello 2011 http://www.railsonwave.com/assets/2006/12/21/screensaver_1.jpg

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Ruby and japanese

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