From: Robert Klemme <shortcutter@...>
Date: 2010-08-28T00:40:14+09:00
Subject: Re: Avoiding eval

On 27.08.2010 17:24, Andrew Wagner wrote:

> If I have a string like "Math", I know I can use const_get to turn it into
> an instance of Class. Awesome.
>
> But what if I have something like "Math::PI". Am I stuck using eval to
> resolve that?

One typical idiom looks like this:

a_class = str.split('::').inject(Object) {|cl,n| cl.const_get n}

Cheers

	robert

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