For me the warning is useful.

If a string is missing a value, that is an indication of a potential bug. The warning tells me that what I expected is not what I got. Either I have over looked someplace where a default should be set, or the incoming data is deficient (the User didn't fill in a field on the form, the database is missing a value, etc.) As a matter of defensive programming, I want to know that a value was missing, so I can run the bug to earth and fix it. And also determine why my test harness missed it. (The Spec said that User-ID-Alias is a required field, so why is it blank in the DB?)

Now, whether the end-user of my code sees the warning is another matter. I write errors and warning to logs that I can check later. For code going into production for the first time, the first few days of those logs can be very enlightening (or horrifying....).

----
I Go Back to Sleep, Now.

OGB

In reply to Re: Do people find warning for undef with string compare useful? by Old_Gray_Bear
in thread Do people find warning for undef with string compare useful? by perl-diddler

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