From: Roger Pack <rogerpack2005@...>
Date: 2010-01-27T10:22:10+09:00
Subject: Re: Find the parameters of each method in a class


>> irb(main):005:0> C.instance_method(:meth).parameters
>> => [[:req, :a], [:req, :bb], [:opt, :ccc], [:block, :b]]
>> 
>> But you will not get the names for C methods like String#tr, just the
>> type of the parameters.
> Dang thats awesome and exactly what I need! Why can't it be in 1.8? :(

rdp-arguments gem:

>> require 'arguments'
 class C
>> def meth(a, bb, ccc = nil, &b)
>> end
>> end
=> nil
>>  Arguments.names C, :meth
=> [[:a], [:bb], [:ccc, "nil"]]

You can get it in 1.9.1 with the methopara gem, too.
GL!
-r
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