16 Feb
2011
16 Feb
'11
1:31 p.m.
On Feb 15, 2011, at 6:05 PM, Daniel Fischer
On Tuesday 15 February 2011 23:29:39, Andrew Coppin wrote:
Ouch!
I suppose what we could really do with is a combinator that runs a monadic action N times, without actually constructing a list N elements long in order to do so.
True enough. But I guess nobody¹ bothered yet because there are so many possible designs and most of them are trivial to implement in a line or two (so the pain of writing them repeatedly isn't bad enough).
¹ Not quite true, there's the monad-loops package on hackage which provides a handful of loops. But not the trivial nTimesDo.
Doesn't Control.Monad.replicateM_ do exactly that? -- James