That is what index is made for: 

sub is_subst {
    my ($string, $subst) = @_;
    -1 != index( $string, $subst);
}

[download]
You may just want to call index directly, since it returns the location in $string of the first match.

After Compline,
Zaxo

In reply to Re: Testing if a string is a substring by Zaxo
in thread Testing if a string is a substring by monkfan

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