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Reaped: GDBM_File with Tie function

by NodeReaper (Curate)
on Oct 17, 2012 at 08:49 UTC ( #999493=perlquestion: print w/replies, xml ) Need Help??
NodeReaper has asked for the wisdom of the Perl Monks concerning the following question:

This node was taken out by the NodeReaper on Oct 17, 2012 at 09:05 UTC
Reason: [Ratazong]: duplicate of 999492

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Node Type: perlquestion [id://999493]
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[Lady_Aleena]: Why does grep(/.*$in.*/, @my_modules) work but grep { $_ =~ /.*$in.*/; $_ } @my_modules not work? What did I do wrong in the second?
[tobyink]: Why are you returning $_ n your grep block? You should return a boolean.
[tobyink]: *in your grep block
[tobyink]: You can use grep { $_ =~ /.*$in.*/; } @my_modules but why not stick to grep(/.*$in.*/, @my_modules)? (The latter is faster.)
[shmem]: Lady_Aleena, in the first example grep evaluates the result from grep and if true, returns $_. In the second, it always returns $_
[shmem]: ..the result from the pattern match

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