Re^2: how to extract string by possible groupings?

/((.*\.c\s)|(.*\.h\s)|(.*\.cpp\s))|(\s+(.*)\%\s+(of+)\s+\d+\s)|(\bNone\b)/g
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Capture group numbering begins at 1, not 0, so the capture group variables corresponding to the capturing groups in the example would be $1 .. $8. In the @- and @+ arrays, the offsets of the entire match are held at index 0. Otherwise, $0 holds the script name. See Variables related to regular expressions and perlvar in general.

Update: The [originally posted] question was for a match in list context ... which returns the matches as a list into an array. Quite right; my mistake.

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Re^3: how to extract string by possible groupings? by LanX (Saint) on Jun 02, 2014 at 23:22 UTC
See OP The question was for a match in list context `(@match) = ( $_ =~ /.../g )` which returns the matches as a list into an array. i.e. `$match[0]=$1` ( see `perlop` š ) I didn't want to confuse with more details than necessary... Cheers Rolf (addicted to the Perl Programming Language) update well actually the /g modifier isn't necessary and might produce too many matches... `DB<110> @matches = ('abcd' =~ /(.)(.)/) => ("a", "b") DB<111> @matches = ('abcd' =~ /(.)(.)/g) => ("a", "b", "c", "d") DB<112> $matches[0] => "a"` [download] š) `perlop#Regexp-Quote-Like-Operators` `* Matching in list context` `If the "/g" option is not used, "m//" in list context returns a list consisting of the subexpressions matched by the parentheses in the pattern, i.e., ($1, $2, $3...).`	[reply] [d/l] [select]

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Re^3: how to extract string by possible groupings?
by LanX (Saint) on Jun 02, 2014 at 23:22 UTC

The question was for a match in list context

(@match) = ( $_ =~ /.../g )

which returns the matches as a list into an array.

i.e. $match[0]=$1 ( see perlop š )

I didn't want to confuse with more details than necessary...

Cheers Rolf

(addicted to the Perl Programming Language)

update

well actually the /g modifier isn't necessary and might produce too many matches...

  DB<110> @matches = ('abcd' =~ /(.)(.)/)
 => ("a", "b")

  DB<111> @matches = ('abcd' =~ /(.)(.)/g)
 => ("a", "b", "c", "d")

  DB<112> $matches[0]
 => "a"
[download]

š) perlop#Regexp-Quote-Like-Operators

* Matching in list context

If the "/g" option is not used, "m//" in list context returns a list consisting of the subexpressions matched by the parentheses in the pattern, i.e., ($1, $2, $3...).

[reply]
[d/l]
[select]