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Answer: How do I replace a substring (if exists) with a different substring in a string?

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Q&A > strings > How do I replace a substring (if exists) with a different substring in a string? contributed by tachyon

You can use a s/// regex like this:

my $str = "I have a dream"; my $find = "have"; my $replace = "had"; $find = quotemeta $find; # escape regex metachars if present $str =~ s/$find/$replace/g; print $str;

The quotemeta lets you find strings that contain regex meta characters and the /g at the end of the s/// does all occurances.

cheers

tachyon

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