http://www.perlmonks.org?node_id=1026452


in reply to What does ".=" mean?

. is for string concatenation (see Additive operators), = is an assignment operator.

my $messageText = "This is some text\n";
$messageText .= "Add more text here\n";

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Is the same as:

my $messageText = "This is some text\n";
$messageText = $messageText . "Add more text here\n";

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Update: added brackets to link, fixed typo

In Section Seekers of Perl Wisdom