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Re^2: return undef

by Thilosophy (Curate)
on May 23, 2005 at 04:38 UTC ( #459442=note: print w/ replies, xml ) Need Help??

in reply to Re: return undef
in thread return undef

Another useful feature of raising exceptions is that you can pass along the actual error message, which makes debugging much easier.

open $fh, ">$filename" or die "could not open '$filename' for writing: $! "
Also, if you do not write code to catch the exception, your program will terminate with a more meaningful message than "Use of uninitialized value at ... ".

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Re^3: return undef
by gaal (Parson) on May 23, 2005 at 05:02 UTC
    die now takes more than just strings. You can use first-class objects if you like. This lets you add more structured information about the exception, which also makes catch/propagate decisions less kludgy to implement.

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