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I'm not fully convinced yet, though.

Here's one more: open local *HMD, ">", \(my $x) or die $!; print HND "Foo"; close HND; only causes warnings, while open my $hmd, ">", \(my $x) or die $!; print $hnd "Foo"; close $hnd; is a compile-time error. Warnings are easily missed in server logs or long command-line outputs.

Sure. But I can keep a reference to those if needed. Or I can choose a different name for the file handle.

Taken all together, doesn't it all seem to be getting a bit complicated? You've got quite a long list of things you need to keep track of: in the entire scope of the local (which you have to put in its own block to limit its scope), that is, the entire call stack, you have to know all of the names of the globs and packages that you're working with, and you have to be sure they don't clash with each other or anything else (your sub close_fh is just one example), plus you have to keep track of possible typos. None of these are things to worry about when you use lexical filehandles.

Is all that really worth it to avoid the print $fh, typo? (If you're only ever going to be writing short command-line scripts that don't write much to STDOUT/ERR or call anyone else's code, maybe yes...?)


In reply to Re^3: lexical vs. local file handles by haukex
in thread lexical vs. local file handles by jo37

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