Serge D. Mechveliani wrote:
Who can advise, please,
is this for sure that the program
\ x -> [f y | y <- g x]
is not more expensive in computation than
\ x -> let ys = g x in [f y | y <- ys]
?
May the difference depend on Haskell implementation?
In GHC (and probably JHC) it shouldn't make any difference, in other compilers
it might do.
Cheers,
Simon
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