Code Reading

Transcript

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   高見 龍 です

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   高 見龍 です @eddiekao

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   Code Reading Chimpr Learning more about Ruby by Reading Ruby

   Source Code
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   I come from Taiwan photo by Fishtail@Taipei

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   photo by J o n a G r a p

   h Y 
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   photo by HeyNix

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   photo by randomwire

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   None
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    I’m a Python guy (≈ 2 years) I’m a iOS

    app guy (≈ 2 years) I’m a Flash guy (≈ 8 years) I’m a Ruby guy (≈ 4 years)
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    But not a C guy, yet!

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    Ruby > Rails

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    “I’m a SHOW OFF person”

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    “Experience Sharing is fun”

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    Current Status 80% iOS app, 20% Ruby/Rails

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    100% Ruby Lover!

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    None
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    Web Development Conference in Taiwan

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    None
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    2 days, 3 tracks session

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    750+ attendees

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    all tickets sold out in 4 mins

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    WebConf Taiwan 2014

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    Will be held on Jan 2014

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    850+ attendees in 2014, hopefully.

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    All about web development

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    楽しい

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    http://webconf.tw

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    Code Reading

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    Why read source code? How to start? What I learned?

    Anything interesting?
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    Why read source code ?

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    Ian Ruotsala

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    http://blog.rubybestpractices.com/posts/gregory/005-code-reading-stdlib.html “once you start digging around in someone else’s code

    base, you’ll learn a lot about your own strengths and weaknesses” - Ruby Best Practice
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    See how the Core Team write Ruby

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    photo by chaines106 Read the source, Luke!

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    source http://kyaraben.seesaa.net/article/168967765.html source code は友達

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    Contribution!

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    Committer in my dream!

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    FUN! :)

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    Requirement ?

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    C language

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    “What if I don’t have any skill of C?”

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    “Just Learn It!”

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    Curiosity and Passion

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    Where to Start ?

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    get source files!

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    download from Ruby website, or clone from github

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    Ruby 1.9.2 p290

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    None
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    Quick browsing.. :)

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    * .c + * .h * .rb (stdlib)

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    Let’s have some fun!

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    Object Class String Array Hash

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    “ruby.h”

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    Object => RObject Class => RClass String => RString Array

    => RArray Hash => RHash
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    “object.c”

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    Init_XXXX( )

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    “all Class’s class is a Class”

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    “new”

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    class A def initialize puts "hello" end end a =

    A.new
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    Proc

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    How to execute a Proc?

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    proc.call proc[ ] proc.yield proc === 123

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    attributes

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    push v.s. <<

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    Object ID

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    What else?

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    Haskell-like syntax :)

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    head (x:_) = x tail (_:xs) = xs

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    people = { "Eddie" => ["green", "eddie@digik.com.tw"], "Joanne" => ["yellow",

    "hello@yahoo.com"] } people.map { |name, (color, email)| puts [name, email] }
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    parse.y#8277-8299 shadowing_lvar_gen( ) people = { "Eddie" => ["green", "eddie@digik.com.tw"],

    "Joanne" => ["yellow", "hello@yahoo.com"] } people.map { |name, (_, email)| puts [name, email] }
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    Method missing

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    Anything interesting ?

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    Interesting naming.. XD

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    Conclusion

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    “from basic structure”

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    “don’t be afraid of source code”

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    source http://kyaraben.seesaa.net/article/168967765.html source code は友達

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    References

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    http://i.loveruby.net/ja/rhg/book/ “Rubyソースコード完全解説” (RHG) by 青木峰郎

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    http://patshaughnessy.net/ruby-under-a-microscope “Ruby Under a Microscope” by Pat Shaughnessy

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    Chimpr Hope we all can become Jedi Master someday :)

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    高見 龍 です

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    以上です。 ご清聴ありがとうございました thanks for your listening :)

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    高見龍 Contacts photo by Eddie Website Blog Plurk Facebook Google

    Plus Twitter Email Mobile http://www.eddie.com.tw http://blog.eddie.com.tw http://www.plurk.com/aquarianboy http://www.facebook.com/eddiekao http://www.eddie.com.tw/+ https://twitter.com/#!/eddiekao eddie@digik.com.tw +886-928-617-687