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Re^8: Burned by precedence rules (eqv)

by TimToady (Parson)
on Dec 31, 2008 at 03:17 UTC ( #733392=note: print w/replies, xml ) Need Help??

in reply to Re^7: Burned by precedence rules (eqv)
in thread Burned by precedence rules

Well, we can't use eqv because we already use that for something else, but we do have a Boolean not-equal already:
$x ?^ $y
What we don't have is a Boolean equal. I thought about adding:
$x ?= $y
but people would probably think that means:
$x = $x ? $y;
which is nonsense, but they'd still think it. :-)

Anyway, the utility is not worth the extra complexity, in my opinion. Comparing two Booleans for equivalence is an odd enough thing to do that I don't mind if it looks a little odd.

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Re^9: Burned by precedence rules (eqv)
by tilly (Archbishop) on Dec 31, 2008 at 03:58 UTC
    What about saying that !( potential boolean operator ) means the boolean negation of the boolean operator? That would naturally give you the logical operators !&& (nand), !|| (nor) and !^ (not xor). The last would, of course, be Boolean equals.

    (I can't believe I just suggested that.)

Re^9: Burned by precedence rules (eqv)
by tye (Sage) on Dec 31, 2008 at 03:47 UTC

    Note that I did include a winky smiley. But I saved the clincher argument for now: Perl 6 is becoming so like VB, it will be very surprising to VBers when the purpose of eqv is so different. :-D

    - tye        

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[kcott]: marioroy, not much to go on. Searching "slow logging" (by me) produces no results; just "slow" gives a screenful. Perhaps, "Searching large files a block at a time" which had a performance aspect and you had some imput also.
[gnosti]: Hi, Looking for a module that can add HH:MM:SS durations like 1:40, 1:00:24.13 and 12.3? I see on CPAN more modules with absolute dates. TIA
[kcott]: s/imput/input/
[Corion]: DateTime::Duration ? Personally,I convert stuff to seconds using Time::Piece or Time::Local and then add the seconds and then use POSIX::strftime to print them as hours again
[marto]: good morning all, TCIF
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[marioroy]: kcott Thanks

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