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Perl Substitution - Perl
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Tagged in : Perl
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Perl Substitution
The syntax s/match_value_to_replace/replace_value/ replaces the value searched for with the replace_value. By adding the letter g to the end, will find all possible matches. Otherwise, only the first match found is changed.
$_ = "here where there theresa";
s/ere/at/g; # $_ = hat, what, that, thatsa
$_ = "hello, world";
$new = "goodbye";
s/hello/$new/; # $_ = goodbye, world
$_ = "this is a test";
s/(\w+)/<$1>/g # $_ =
The above works, because $1 is set to the with in the first parenthesized pattern match, which is this case is each word because the 'g' flag is used. |
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By Geethalakshmi, On - 2010-09-17 |
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