Re: How to grep for a filename for each of the keys of a hash

1: $filename is presumably a string, not a pattern, which you want to match; so you have to escape metacharacters first if you're going to use it in a regular expression: /\Q$filename\E/, for example, if you don't want to modify that variable with the quotemeta function or don't need the quoted version for anything else ($foo = quotemeta $foo; or my $foo_quoted = quotemeta $foo;</code>).

my ($foo) = $depopath =~ /\s(\S+)$/;
or my ($foo) = reverse split ' ', $depopath;

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Re^2: How to grep for a filename for each of the keys of a hash by k_manimuthu (Monk) on Dec 13, 2010 at 05:43 UTC
As per above comments you use the quotemeta function. And Insist of the below code `grep (/$filename/i, $key) foreach my $key (keys %path_versions)` [download] You will try the below code. Here, you no need to use the foreach loop. You directly pass 'hash keys'. `@array = grep (/$filename/, keys %path_versions);` [download]	[reply] [d/l] [select]
Re^3: How to grep for a filename for each of the keys of a hash by perl_mystery (Beadle) on Dec 13, 2010 at 06:11 UTC
`push @array = grep (/\Q$file_name\E/i, keys %pathname_versions);` [download] I am getting the below error when the above piece of code is executed,what does it mean? Type of arg 1 to push must be array (not list assignment)	[reply] [d/l]
Re^4: How to grep for a filename for each of the keys of a hash by k_manimuthu (Monk) on Dec 13, 2010 at 06:34 UTC
`my @array = grep (/\Q$file_name\E/i, keys %pathname_versions);` [download] That's the right thing.	[reply] [d/l]
Re^4: How to grep for a filename for each of the keys of a hash by Anonymous Monk on Dec 13, 2010 at 06:35 UTC
s/ =/,/ in that code.	[reply]