
3 Feb
2011
3 Feb
'11
1:33 p.m.
On Thursday 03 February 2011 19:00:53, malcolm.wallace wrote:
I think it's quite common in the case where the Monad is a MonadPlus. I certainly use that feature As a specific instance of MonadPlus, nearly all monadic parser-combinator libraries rely on this.
Also it's pretty common for filtering in list comprehensions.