[OT] A Note on Lazy Pure Functional Programming

bearophile bearophileHUGS at lycos.com
Tue Feb 28 20:42:39 PST 2012

Manfred Nowak:

> Satnam Singh [http://research.microsoft.com/en-us/people/satnams/] 
> writes:
> > Not only do lazy pure functional programmers know the cost of
> > nothing, they don't know _when_ they know the cost of nothing.
> on the time (several hours) needed to find and fix a space leak by
> Simon Marlow [http://research.microsoft.com/en-us/people/simonmar/].

Simon Peyton-Jones says that the next Haskell should be strict and pure, the next ML should be pure with monads, and that purity is more important than laziness. So lazyness is good to have, but it's better to not have it on default.


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