On Fri, Jul 30, 2010 at 01:52:18AM +0200, Jonathan Worthington wrote: > Mark J. Reed wrote: > >Possibly a FAQ, but is there a simple way of asking if an item is > >contained in an array? > > > my @x = 1,2,3; say ?...@x.grep(2); say ?...@x.grep(4); > 1 > 0 > > Though more efficient would be: > > > my @x = 1,2,3; say ?...@x.first(2); say ?...@x.first(4); > 1 > 0
If .grep and List.Bool are implemented the way I think they should be (and the way they are in Rakudo), then both of the above are equally efficient. :-) Pm
