From: Yusuke Endoh <mame@...>
Date: 2011-10-19T01:04:03+09:00
Subject: [ruby-core:40213] Re: [Ruby 2.0 - Feature #5454] keyword arguments

Hello,

2011/10/19 Joshua Ballanco <jballanc@gmail.com>:
> For example, should this work:
> � � x = 30
> � � def foo(a: 1, b: 2, c: x)
> � � � � puts [a, b, c]
> � � end
> � � foo(a: 10, b: 20) #=> �[10, 20, 30]
> ?


Though the example will not work because x is in the different
variable scope, you can write any expression as a default value,
like:

  def foo(str: File.read("/etc/passwd"))
    p str
  end
  foo(str: "bar") #=> "bar"
  foo             #=> the contents of /etc/passwd

... currently it does not work correctly because of bug of my
implementation, though :-)
I'll update the patch tomorrow.

-- 
Yusuke Endoh <mame@tsg.ne.jp>