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I just skimmed through some code I'd written recently on my netbook and checked the line lengths. (not counting indentation, currently set to tab width of 2)

  • Most of the "short" lines are 40-50, as there are lots of two level deep hash keys with decent names involved.
  • Longer lines go 80-120, taking up half the screen with math and hash keys, or comments.
  • The longest lines hit 200, and tend to be die/warn/confess strings with interpolated hash lookups and a post condition.
    • eg: confess "Insufficent data in X from {hash lookup} through {hash lookup} source data file {hash lookup}" unless {condition};

I'm happy with the 200 char confess, because the important bits of it are all in the first 40-60 characters. Then there's a bunch of hash lookups which only matter after they've been interpolated into an error message. Then comes the conditions, which should have been clear from the English in the first 40-60 characters. It's a netbook, so why waste vertical space on unimportant stuff like that?

Note: I am not using a fixed width font, so the lines appear narrower than they otherwise would be.

In reply to Re: 78/80 chars perl line still a meaningful rule by SuicideJunkie
in thread 78/80 chars perl line still a meaningful rule by McA

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