Alternative to eval()

I'm looking for an alternative 开发者_运维百科to that code:

 expl = eval "BeEF::Modules::Exploits::#{klass.capitalize}.new"

Here the eval is totally insecure. Is there an alternative I could use to generate dynamically classes without using eval? As in, klass is always different. So my code stays generic.

Thanks for your time.

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You can use Module#const_get:

expl = BeEF::Modules::Exploits.const_get(klass.capitalize).new