How can I find all matches to a regular expression in Perl?

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I have text in the form:

Name=Value1
Name=Value2
Name=Value3

Using Perl, I would like to match /Name=(.+?)/ every time it appears and extract the (.+?) and push it onto an array. I know I can use $1 to get the text I need and I can use =~ to perform the regex matching, but I don't know how to get all matches.

A m//g in list context returns all the captured matches.

#!/usr/bin/perl

use strict; use warnings;

my $str = <<EO_STR;
Name=Value1
Name=Value2
Name=Value3
EO_STR

my @matches = $str =~ /=(\w+)/g;
# or my @matches = $str =~ /=([^\n]+)/g;
# or my @matches = $str =~ /=(.+)$/mg;
# depending on what you want to capture

print "@matches\n";

However, it looks like you are parsing an INI style configuration file. In that case, I will recommend Config::Std.

perlrequick, This page describes the syntax of regular expressions in Perl. So, the pattern / blur\\fl/ would match any target string that contains the sequence "blur\fl" . It is important to find the matches in the string using regular expressions. In addition, it is more useful if we can get the matches out of the string for further processing. Perl makes it easy for you to extract parts of the string that match by using parentheses around any data in the regular expression. For each set of capturing parentheses

my @values;
while(<DATA>){
  chomp;
  push @values, /Name=(.+?)$/;
}   
print join " " => @values,"\n";

__DATA__
Name=Value1
Name=Value2
Name=Value3

perlre, A regular expression usually matches the leftmost occurrence of a pattern within an incoming (source) string. This doesn't matter if all you're� Perl has long been an extremely popular choice for text processing due to its native regular expression support. In this primer we'll give you a quick run down on how you can use regular

The following will give all the matches to the regex in an array.

push (@matches,$&) while($string =~ /=(.+)$/g );

Finding all matches to a pattern in Perl regular expressions, Globally finds all matches. 7. cg. Allows the search to continue even after a global match fails. Matching Only Once. There is� The g modifier matches all occurences in the string. List context returns all of the matches. List context returns all of the matches. See the m// operator in perlop .

Use a Config:: module to read configuration data. For something simple like that, I might reach for ConfigReader::Simple. It's nice to stay out of the weeds whenever you can.

Perl - Regular Expressions, Read repetition as any of the repetition expressions listed above it. Shortest match means that the shortest string matching the pattern is taken. The default is � There are three regular expression operators within Perl. Match Regular Expression - m// Substitute Regular Expression - s/// Transliterate Regular Expression - tr/// The forward slashes in each case act as delimiters for the regular expression (regex) that you are specifying.

Regular expressions in Perl, Hi Perlmonks,. I am interested to get all the possible matches from a string using regex. But I have got fewer matches than expected with the� Note that if you know the number of capturing groups you need per match, you can use this simple approach, which I present as an example (of 2 capturing groups.). Suppose you have some 'data' like

How does one get all possible matches from regex?, Perl makes it easy for you to extract parts of the string that match by using parentheses () around any data in the regular expression. For each set of capturing� A regular expression is a pattern that provides a flexible and concise mean to match the string of text. A regular expression is also referred to as regex or regexp. A regular expression can be either simple or complex, depending on the pattern you want to match. Basic matching. The following illustrates the basic syntax of regular expression

Regular Expression Extracting Matches, Regular Expressions. Regular expressions are too huge of a topic to introduce here, but make sure that /i - case insensitive match; /g - match multiple times The match operator, m//, is used to match a string or statement to a regular expression. For example, to match the character sequence "foo" against the scalar $bar, you might use a statement like this: if ($bar =~ /foo/)

Regexes, A regexp consisting of a word matches any string that contains that word: "Hello World" =~ /World/; # matches. What is this Perl statement all about? Finding All Matches In a String The “/g” modifier can be used to process all regex matches in a string. The first m/regex/gwill find the first match, the second m/regex/gthe second match, etc. The location in the string where the next match attempt will begin is automatically remembered by Perl, separately for each string.

Comments
  • Related: stackoverflow.com/questions/1034027/…
  • The important thing to note is the g at the end of the regular expression.
  • Actually, I simplified the format. There's text in the middle, but until I handled the simple case, there was no hope of me handling the larger case.
  • Don't use $1 if the regex didn't succeed: /Name=(.+?)$/ and push @values, $1. Or even just my @values = map /Name=(.+?)$/, <DATA>;