Re^4: When to use eval

Actually, autodie is way better than or die $!. It would rather be like this:

open my $fh, '<', $filename or die qq(Can't open $filename for $mode: '$!')

It takes care to inform about the filename (in quotes, so that it stands out against the constant text), the open mode, and also wraps $! in quotes. That is exactly why I often use autodie, especially in short and quick programs when I don't want to spend time on crafting error messages.

Which error message would you prefer:

Permission denied at demo1.pl line 2.
Can't open 'filename.txt' for reading: 'Permission denied' at demo2.pl line 2

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Re^5: When to use eval by stevieb (Canon) on Feb 02, 2024 at 07:32 UTC
I should have provided a better example. What autodie outputs is near identical to the diagnostic info I do manually. Nonetheless, it does do it automatically :)	[reply]