It is also legal to use a number or another variable wherever you might use a regex: 

$s = '0123456789';;
print $s =~ 0;;
1

$r = 123;;
print $s =~ $r;;
1

[download]

Whatever you put there, perl will try to resolve as a regex.

The downside is that you can't use modifiers without // or m//.

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In reply to Re: string on right side of m//? by BrowserUk
in thread string on right side of m//? by 7stud

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