On Tue, May 26, 2009 at 06:43:40PM -0500, John M. Dlugosz wrote: > Daniel Carrera daniel.carrera-at-theingots.org |Perl 6| wrote: >> The following construction doesn't do what a user might expect: >> >> for [email protected] -> $k { do_something($k,@foo[$k]) } > > Write ^[email protected] as a shortcut of [email protected], which is the > variation to exclude that endpoint if you would rather not write > [email protected].
An even cleaner shortcut might be to use ^...@foo instead of ^[email protected]: for ^...@foo -> $k { do_something($k, @foo[$k]) } Somewhat clearer could be: for @foo.keys -> $k { do_something($k, @foo[$k]) } And some may prefer: for @foo.kv -> $k, $v { do_something($k, $v) } I think the anti-pattern of "[email protected]" (or its incorrect form "[email protected]") should probably disappear in favor of the above forms instead. Pm
