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Re: Commifying sensibly

by gone2015 (Deacon)
on Dec 02, 2008 at 17:34 UTC ( #727465=note: print w/ replies, xml ) Need Help??


in reply to Commifying sensibly

Appears not to work if there's a decimal '.' ? Or a sign ?

Just for the hell of it:

use strict ; use warnings ; foreach my $t (1234567, 123.4567, -123456, .123456, '.1234567', -10* +*1000) { printf "%12s -> oko1:%12s, faq:%12s\n", $t, commify($t), commify_f +aq($t) ; } ; sub commify { my ($s) = @_ ; my @list = () ; my $c = 0 ; for (reverse split //, $s){ unshift @list, $c++ % 3 || $c == 1 ? $_ : "$_,"; } ; return join '', @list ; } ; sub commify_faq { local $_ = shift ; 1 while s/^([-+]?\d+)(\d{3})/$1,$2/ ; return $_ ; } ;
gives:
     1234567 -> oko1:   1,234,567, faq:   1,234,567
    123.4567 -> oko1:  12,3.4,567, faq:    123.4567
     -123456 -> oko1:   -,123,456, faq:    -123,456
    0.123456 -> oko1:  0.,123,456, faq:    0.123456
    .1234567 -> oko1:  .1,234,567, faq:    .1234567
        -inf -> oko1:       -,inf, faq:        -inf
which, from a pedagogical stand point, may be useful in itself :-)


Comment on Re: Commifying sensibly
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Re^2: Commifying sensibly
by oko1 (Deacon) on Dec 04, 2008 at 01:01 UTC

    Oh, well spotted!++ I was only thinking of integers. Since the whole concept is flawed, and there doesn't seem to be an obvious way to fix it, it's back to the drawing board! :)


    --
    "Language shapes the way we think, and determines what we can think about."
    -- B. L. Whorf

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