in reply to Why not support this syntax?

The other common case you want is that $x is outside some range. So will people try to write this: if(  $min > $x < $max  ) { which would always be false (provided $min < $max).

Or would you only allow inequalities of the same "direction" to be clustered together like that? Personally I never use > nor >= because I find the code easier to understand when the values are sort left-to-right, smallest-to-largest. (:

        - tye (but my friends call me "Tye")

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Re: (tye)Re: Why not support this syntax?
by MeowChow (Vicar) on Apr 24, 2001 at 20:27 UTC
    I think you meant: 
    if ($min > $x > $max) { ... }

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    What you're implicitly suggesting is that Perl would change symantics from && between inequalities to ||, but how could perl possibly know when to do this and when not to? Eg. in my original expression, what would Perl do if $x was greater than $max? I think your example can more sensibly be expressed as: 
    unless ($min < $x < $max) { ... }

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       MeowChow                                   
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      See, I told you I can't understand code that uses >. (:

      But you just illustrated more problems with this. For example, your last line should have been: unless(  $min <= $x <= $max  ) But I don't find those compelling reasons to not implement it. If someone actually managed to produce a patch for this I wouldn't be opposed to it.

              - tye (but my friends call me "Tye")
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