23 May
2011
23 May
'11
12:35 p.m.
On 23 May 2011, at 17:20, michael rice wrote:
What's the best way to end up with a list composed of only the Just values, no Nothings?
Alternatively, [ x | Just x <- originals ] It also occurs to me that perhaps you still want the Just constructors. [ Just x | Just x <- originals ] [ x | x@(Just _) <- originals ]