What you're asking for won't work without a bunch of magic. If you really, really want it to look like that, create an object with an overload that causes it to do something particular when you stringify it. If you do that, though, then don't blame me if the maintenance programmer turns out to be a psychopath with an axe who knows where you live.

However the following can work and at least gives a hint as to the evil lurking within: 

for (@array) {
    s/$searchString/$replaceString/eeg;
}

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Where the ee means you eval it, and then eval the result of that. Or in other words you execute whatever is in $replaceString as code. I would set that up more sanely as: 
for (@array) {
    s/$searchString/$replace->()/eg;
}

[download]
But then again I'm a sane sort of guy who doesn't want to worry about maintenance programmers on a vendetta.

In reply to Re^3: Function call in regex replacement string by tilly
in thread Function call in regex replacement string by PoorLuzer

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