[Haskell-cafe] Why purely in haskell?
ndmitchell at gmail.com
Wed Jan 9 09:55:53 EST 2008
> I got question about why haskell insist to be a purely FL. I mean is
> there any feature which is only support by pure?
Laziness. It is very difficult to have a lazy language which is not pure.
Laziness and purity together help with equational reasoning, compiler
transformations, less obscure bugs, better compositionality etc.
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