Thread (1 message) 1 message, 1 author, 2016-06-15

Re: [PATCH RFC 0/5] Patches to avoid reporting conversion changes.

From: Jari Aalto <hidden>
Date: 2016-06-15 22:48:40

merlyn@stonehenge.com (Randal L. Schwartz) writes:
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"Jari" == Jari Aalto [off-list ref] writes:
Jari>     if ( $OS_ERROR ) ...

Right, but without looking, is it $OS_ERROR or $OSERROR?
I don't see any difference, because that variable is always within the
close context of previous statements. The reader would consult the lines
above.

And if that's the only problem, which I don't believe it is for a Perl
programmer, there is also $ERRNO.
You're trading a list of single punctuation characters, pretty
unambiguous, for things that could have been named a dozen different
ways each.
A typical Perl program used those "single puctuation variables" and they
are not immediately understandable; unless you know them by heart.

They are cute for one-liners, but not suitable for maintainable
programs, edited by N developers, with different backgrounds and skills.

To make the code actually readable by anyone, not just by a Perl coder
breathing the language 24/7, is what software, any software would be
better off.

It's akin to the opening "magic values" in a program:

    100
    130
    140

Good programmers write instead (pseudo code):

    ERROR_MINOR = 100
    ...


    return ERROR_MINOR

Jari
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