[Haskell-cafe] Mystery operator?

[Daniel Fischer]

Am Montag 30 November 2009 19:32:01 schrieb Brandon S. Allbery KF8NH:
> On Nov 30, 2009, at 13:26 , michael rice wrote:
> > So, ALL patterns are strict, unless one precedes them with "~"?
>
> "case" patterns are strict (this includes pattern matching in function
> arguments).
> "let" patterns are lazy.

And of course, wildcard patterns (_) and variable patterns (var) are lazy too.