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I find it significantly easier and faster to parse the intent.

Could you quantify (in some fashion) what you mean by "significantly easier and faster"?

my $mol = ( $n == 42 ) ? 'forty two' : '';
my $mol = ''; $mol = 'forty two' if 42 == $n;

I find your version quite horrible to parse.

  • Is that one statement or three?

    Oh! It's two!

  • And why is it (are they) all squished up like that?

    It looks like the the code-wrap routine has been given some ridiculously narrow width limit.

  • Why is he comparing a literal against a variable?

    Is the literal's value likely to suddenly change?

    (Yes. I am aware of the justifiction for the backward logic. :)

As for your last example, I find it almost incredulous that you would code that; and almost impossible to parse without reformatting it.

Why not just:

my $mol = defined $n ? ( $n == 42 ? 'fourty two' : '' ) : 'n/a';

I also find the concentration on the minutia of single statements far less important than the overall flow of the code.

That is, when scanning the code, I only need to recognise that $mol has been initialised, and then the next step and the next. I'll only be concerned with what it was initialised to once I understand the overall flow; and if I suspect that might be the source of the problem I'm looking for, or otherwise needs closer inspection.

I don't need to know all the details of each line (or 3 lines!) of code from an instantaneous glance. If I have to read the line twice to understand what it does -- maybe take 2 seconds instead of 1/2 a second -- it is no biggy in the scheme of things. But understanding the overall flow of the subroutine or block is far more important, and that -- for me at least -- means being able to see as much of that subroutine or block as -- clearly defined steps -- as possible. Which is why I infinitely prefer the one line versions to your 3 or 5 line examples.


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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^2: Two simple code style advice questions (tye) by BrowserUk
in thread Two simple code style advice questions by eyepopslikeamosquito

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