Re^6: search of a string in another string with 1 wildcard

How to add + and space to the construct? So instead of

 my $pattern = qr{ab[crdnfqm]def};

 my $pattern = qr{ab[crdnfqm\+\s]def};
[download]

will be correct? to be used with your solution

 if $string =~ m{ ($pattern) };
[download]

Comment on Re^6: search of a string in another string with 1 wildcard Select or Download Code

Replies are listed 'Best First'.
Re^7: search of a string in another string with 1 wildcard by AnomalousMonk (Archbishop) on Oct 15, 2014 at 14:58 UTC
The regex definition `qr{ab[crdnfqm\+\s]def};` does add a `'+'` character and the class of all whitespace characters to the `[crdnfqm]` character class contained in the previous `qr{ab[crdnfqm]def};` definition. Note, however, that `m{ ($pattern) }` (still) requires a blank (0x20) character before and after `$pattern` in order to have a match. (NB: The `'+'` character is not special, i.e., is not a metacharacter, inside a character class and so does not need the `\` escape — but it does no harm.) Please see perlre, perlrecharclass, perlrequick, and perlretut.	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re^7: search of a string in another string with 1 wildcard
by AnomalousMonk (Archbishop) on Oct 15, 2014 at 14:58 UTC

The regex definition qr{ab[crdnfqm\+\s]def}; does add a '+' character and the class of all whitespace characters to the [crdnfqm] character class contained in the previous qr{ab[crdnfqm]def}; definition. Note, however, that m{ ($pattern) } (still) requires a blank (0x20) character before and after $pattern in order to have a match. (NB: The '+' character is not special, i.e., is not a metacharacter, inside a character class and so does not need the \ escape — but it does no harm.)

Please see perlre, perlrecharclass, perlrequick, and perlretut.

[reply]
[d/l]
[select]