Re^2: find common data in multiple files

Don't do this:
$result{$key} = 1; $result{$key}++;
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... (In the code as written, the value can never be anything but 1.)

Sorry, that's wrong.

$ perl -E '$key = "wrong"; $result{$key} = 1; $result{$key}++; say val
+ues %result'
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2
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The way forward always starts with a minimal test.

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Re^3: find common data in multiple files by Anonymous Monk on Dec 28, 2017 at 23:56 UTC
"So, sue me ..." ... two! Nevertheless, not the increment-behavior that the programmer intended, which was the essential point. The value will always be ~~one~~ two.	[reply]