Re: Nifty qr OR bullets with butterfly wings

Safer (allows "-", for example):

my $bullet = sprintf qr/[%s]/, quotemeta join '', keys %bullets;
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Alternative (shorter and returns a compiled regexp unlike the OP's and the above solutions):

my ($bullet) = map qr/[\Q$_\E]/, join '', keys %bullets;
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Re^2: Nifty qr OR bullets with butterfly wings by belg4mit (Prior) on Aug 13, 2009 at 20:00 UTC
Alternative (shorter and returns a compiled regexp unlike the OP's and the above solutions): Huh? My code returns `(?-xism:[@*+])`, but the inclusion of \Q is a good idea. `-- In Bob We Trust, All Others Bring Data.`	[reply] [d/l]
Re^3: Nifty qr OR bullets with butterfly wings by ikegami (Patriarch) on Aug 14, 2009 at 02:59 UTC
It returns the string `(?-xism:[@*+])` `qr/[%s]/` builds a regex that matches strings containing "`%`" or "`s`". `sprintf` stringifies the compiled regex to `(?-xism:[%s])` to use it as the format pattern. The characters are included into the format pattern and the result is returned by `sprintf`. So not only do you not end up with a compiled pattern, you waste time compiling a pattern you never use!	[reply] [d/l] [select]
Re^4: Nifty qr OR bullets with butterfly wings by belg4mit (Prior) on Aug 14, 2009 at 03:37 UTC
Doh! damn, that sucks.... back to `$bullet = qr/[\Q@{[join '', keys %bullets]}\E]/;` I guess. `-- In Bob We Trust, All Others Bring Data.`	[reply] [d/l]