Comments on: Ruby dynamic method calling

By: Michael Nissim

Michael Nissim — Tue, 13 Jul 2010 05:39:01 +0000

Thanks Khaled, I found this useful.

By: Using “Send” for Methods in Ruby :: dot unplanned

Using “Send” for Methods in Ruby :: dot unplanned — Tue, 22 Jun 2010 06:40:45 +0000

[...] around and half-remembering and pawing through Spotlight results that led nowhere, I came across an entry on Khaled alHabache’s blog that reminded me of what I was [...]

By: Tweets that mention Ruby dynamic method calling - Khaled alHabache’s official blog -- Topsy.com

Thu, 22 Apr 2010 03:52:46 +0000

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By: value method

value method — Sat, 03 Apr 2010 04:38:24 +0000

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By: Rafa1970

Rafa1970 — Thu, 18 Feb 2010 09:10:41 +0000

Very useful post.

By: vin

vin — Thu, 23 Apr 2009 10:29:39 +0000

just came across this website from google

this helps me a lot

many thanks

By: Kris

Kris — Sun, 04 Jan 2009 18:29:51 +0000

Thanks Khaled. I am going to try out what you described. Appreciate your patience and help. Will keep an eye on your blog for any future articles on ruby and “symbols” related articles. It is a bit difficult to wrap my head around symbols coming from C++/Java background but I am working towards it. I would like to see a blog post on how symbols enable programming productivity constructs that might otherwise not be possible without them.

By: khelll

khelll — Sun, 04 Jan 2009 17:45:21 +0000

@Kris, if you want to explore more also on symbols you can do this: Symbol.all_symbols.size , and then try to define any new method, and execute that instruction again, you will notice that the number increased by one.

By: khelll

khelll — Sun, 04 Jan 2009 07:57:13 +0000

@Kris, ruby interpreter has a Symbol table that stores class names, method names, class,instance and global variables.
The second part of your question is related to ruby’s method lookup mechanism, please have a look here on point 7.8, and if you couldn’t get it, tell me back so that i explain it in a separated blog post.

By: Kris

Kris — Sat, 03 Jan 2009 22:20:54 +0000

May be I should say “Method identified by Symbol”? When you write s.send(:length), how does the runtime know that what I intend to do is call a method called “length()” on the object s unless the method “length()” is internally stored with a symbol :length. Is my assumption right? What if I said s.send(:test) instead and there is a module method (not part of String class) called “test()”?

I am new to Ruby, hence my curiosity and the question.