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Code Reading
高見龍
May 31, 2013
Programming
6
1k
Code Reading
Learning More about Ruby by Reading Ruby Source Code'
高見龍
May 31, 2013
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Transcript
None
高見 龍 です
高 見龍 です @eddiekao
Code Reading Chimpr Learning more about Ruby by Reading Ruby
Source Code
I come from Taiwan photo by Fishtail@Taipei
photo by J o n a G r a p
h Y
photo by HeyNix
photo by randomwire
None
None
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)
But not a C guy, yet!
Ruby > Rails
“I’m a SHOW OFF person”
“Experience Sharing is fun”
Current Status 80% iOS app, 20% Ruby/Rails
100% Ruby Lover!
None
Web Development Conference in Taiwan
None
2 days, 3 tracks session
750+ attendees
all tickets sold out in 4 mins
WebConf Taiwan 2014
Will be held on Jan 2014
850+ attendees in 2014, hopefully.
All about web development
楽しい
http://webconf.tw
Code Reading
Why read source code? How to start? What I learned?
Anything interesting?
Why read source code ?
Ian Ruotsala
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
See how the Core Team write Ruby
photo by chaines106 Read the source, Luke!
source http://kyaraben.seesaa.net/article/168967765.html source code は友達
Contribution!
Committer in my dream!
FUN! :)
Requirement ?
C language
“What if I don’t have any skill of C?”
“Just Learn It!”
Curiosity and Passion
Where to Start ?
get source files!
download from Ruby website, or clone from github
Ruby 1.9.2 p290
None
Quick browsing.. :)
* .c + * .h * .rb (stdlib)
Let’s have some fun!
Object Class String Array Hash
“ruby.h”
Object => RObject Class => RClass String => RString Array
=> RArray Hash => RHash
“object.c”
Init_XXXX( )
“all Class’s class is a Class”
“new”
class A def initialize puts "hello" end end a =
A.new
Proc
How to execute a Proc?
proc.call proc[ ] proc.yield proc === 123
attributes
push v.s. <<
Object ID
What else?
Haskell-like syntax :)
head (x:_) = x tail (_:xs) = xs
people = { "Eddie" => ["green", "eddie@digik.com.tw"], "Joanne" => ["yellow",
"hello@yahoo.com"] } people.map { |name, (color, email)| puts [name, email] }
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] }
Method missing
Anything interesting ?
Interesting naming.. XD
Conclusion
“from basic structure”
“don’t be afraid of source code”
source http://kyaraben.seesaa.net/article/168967765.html source code は友達
References
http://i.loveruby.net/ja/rhg/book/ “Rubyソースコード完全解説” (RHG) by 青木峰郎
http://patshaughnessy.net/ruby-under-a-microscope “Ruby Under a Microscope” by Pat Shaughnessy
Chimpr Hope we all can become Jedi Master someday :)
高見 龍 です
以上です。 ご清聴ありがとうございました thanks for your listening :)
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