You likely don't care how many times the replacement happened, but it's not uncommon to care about whether any replacements happened. 
if (s/foo/bar/) {
  ...
}
else { 
  ...
}

[download]
(How many isn't even an issue unless you're using /g. It's just 1 or 0 — it replaced something or it didn't.)
Caution: Contents may have been coded under pressure.

In reply to Re^4: Stupid mistakes I repeatedly make by Roy Johnson
in thread Stupid mistakes I repeatedly make by brian_d_foy

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