From: "Brian Schröder" <ruby.brian@...>
Date: 2005-10-17T07:31:51+09:00
Subject: Re: how to create a hash from 2 arrays?

On 17/10/05, Tiggerius <tiggerius@gmail.com> wrote:
> keys = ["1", "2", "3", "4", "5"]
> vals = ["a", "b", "c", "d", "e", "f", "g"]
>
> I want h = {"1"=>"a", "2"=>"b", "3"=>"c", "4"=>"d", "5"=>"e"}
>
> right now I do it by:
>   for i in 0..keys.size-1
>     h[keys[i]]=vals[i]
>   end
>
> is there a ruby way, more slick way of doing this? Thanks.
>
>
>

Not as slick as simons version, but never miss a possibility to use inject.

irb(main):001:0> keys = ["1", "2", "3", "4", "5"]
=> ["1", "2", "3", "4", "5"]

irb(main):002:0> vals = ["a", "b", "c", "d", "e", "f", "g"]
=> ["a", "b", "c", "d", "e", "f", "g"]

irb(main):003:0> keys.zip(vals).inject({}) { | h, (k, v) | h[k] = v; h }
=> {"1"=>"a", "2"=>"b", "3"=>"c", "4"=>"d", "5"=>"e"}

regards,

Brian

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