From: Marc-antoine Kruzik <kadelfek@...>
Date: 2009-09-06T03:06:30+09:00
Subject: Re: something.new( :attribute => value) thing

Tim Hunter wrote:
> When the trailing method arguments are key => value pairs, Ruby collects
> them into a hash and passes the hash as the last argument to the method.
> Frequently the keys are symbols such as :opts or :x. The keys don't have
> to be symbols, though.
> 
> See http://www.softiesonrails.com/2007/8/27/ruby-101-hashes-are-cool

I know the hashes, but I didn't know what was the best way to use 
arguments this way (my first post). Nice link.


>    A.send(:attr_accessor, key)
>    send("#{key}=", val)

This solution is what I was looking for.
With a bit of work, I will be able to write code like this :

a = A.new("hello", "world", :x => 10, :y => 20, :z => "red")
a = A.new("hello", "world", :z => "red", :y => 20, :x => 10)
a = A.new("hello", "world", :z => "red")
a = A.new("hello", "world", :x => 10)

Thank you very much, 7stud.
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