From: James Edward Gray II <james@...>
Date: 2006-01-09T23:05:32+09:00
Subject: Re: hash as paramerter container

On Jan 9, 2006, at 7:53 AM, Sch�le Daniel wrote:

> Hello all,
>
> I am looking for Ruby equivalent for this Python Code
>
> >>> def foo(a,b,c):
> ....     print "a is ", a
> ....     print "b is ", b
> ....     print "c is ", c
> ....
> >>> h = {"c":3, "a":1, "b":2}
> >>>
> >>> foo
> <function foo at 0x403d6f7c>
> >>> foo(**h)
> a is  1
> b is  2
> c is  3

Here are some ideas:

 >> def show( a, b, c)
 >>   puts "a is #{a}"
 >>   puts "b is #{b}"
 >>   puts "c is #{c}"
 >> end
=> nil
 >> params = {:a => 1, :b => 2, :c => 3}
=> {:b=>2, :c=>3, :a=>1}
 >> show(*params.values_at(:a, :b, :c))
a is 1
b is 2
c is 3
=> nil

That's about the closet I can get what what you posted, I think.

 >> def show( args )
 >>   [:a, :b, :b].each { |key| puts "#{key} is #{args[key]}" }
 >> end
=> nil
 >> show(:a => 1, :b => 2, :c => 3)
a is 1
b is 2
b is 2
=> [:a, :b, :b]

This one is more Rubyish though, to me.  It uses Ruby's almost named  
parameter syntax.

Hope that gives you some new ideas.

James Edward Gray II