Apparently this is akin to a schwartzian transform ...

How can that possibly be?

Given that the ST allows you to sort the data by a user defined piece of secondary data, and a user-defined comparison strategy -- and that secondary data needn't even be derived from the actual data in anyway -- and that construct clearly has no mechanism for providing either.

For example, how could that construct do this:

my $today = time; $today -= $today % 86400 + 43200;; ## midday my @dates = map $today + 86400 * $_, 0 .. 364;; my @ordered = map $_->[0], sort { $a->[1] cmp $b->[1] || $b->[2] cmp $a->[2] } map[ $_, substr(scalar localtime($_),0,3), substr(scalar localtime($_), +5,3) ], @dates;;

I can't think of any good reason to sort the epoch dates of the next year of days, by the spelling of their days ascending and the spelling of their months descending, but if I wanted to, the ST allows me to do so.

But there is no way that construct will.


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
/div

In reply to Re: sort +*, @array by BrowserUk
in thread sort +*, @array by raiph

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.