From: "David A. Black" <dblack@...>
Date: 2008-03-31T03:34:12+09:00
Subject: Re: Ruby 1.9 named arguments

Hi --

On Mon, 31 Mar 2008, Tim Hunter wrote:

> bparanj@gmail.com wrote:
>> When I run the following in the irb session, I am getting an error.
>> Any ideas why? TIA.
>> irb(main):036:0> { :a => 1, :b => 4 }
>> => {:a=>1, :b=>4}
>> irb(main):037:0> { :x 2, :y 6 }
>> SyntaxError: (irb):37: syntax error, unexpected tINTEGER, expecting
>> tASSOC
>> { :x 2, :y 6 }
>>       ^
>
> I think you're confusing symbol hash keys with 1.9's named arguments:
>
> foo(:a => 1, :b => 2) # symbol hash keys
> foo(a:1, b:2)  # 1.9 named arguments

They're still symbols in a hash, though. Just the notation is
different:

irb(main):004:0> def x(a); p a; end
=> nil
irb(main):005:0> x(x: 1, y: 2)
{:x=>1, :y=>2}


David

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