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Re: The day of today

by haoess (Curate)
on Mar 07, 2008 at 12:19 UTC ( #672749=note: print w/replies, xml ) Need Help??


in reply to The day of today

perl -le 'print +(localtime)[3]'

Runs under strict too.

-- Frank

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Re^2: The day of today
by grinder (Bishop) on Mar 07, 2008 at 13:16 UTC

    This example confuses the issue. One might conclude that the + (plus) is necessary, when in fact it's not. It's only there to workaround print's brain-damage. It could be written less ambiguously as:

    my $dayOfMonth = (localtime)[3]; print "Today is day $dayOfMonth.";

    Note to gtrain: this is technically known as an array slice. You are taking the array of values returned by localtime and slicing out only the fourth (offset 3) element).

    • another intruder with the mooring in the heart of the Perl

      my $dayOfMonth = (localtime)[3];
      In Perl terminology this is not an array slice, a slice would contrain contain more than one element . An array slice expresses a list, not a scalar. An array slice expresses a list, not an array.

      Be well,
      rir

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[Discipulus]: get them all printed on screen
Discipulus ;=)
[shmem]: silly question, silly answer:
[Discipulus]: i know, i know..
[shmem]: man perlfunc |perl -nle '$ok++ if /Alphabetical Listing of Perl Functions/;if($ok ){$s{$1}++if /^ (\w+)/}}{for(keys %s){$f="prototype \\\&CORE::$_"; eval"$f"||delete $CORE::{$_}}print for sort keys%CORE::'
[shmem]: well, there are some builtins which don't have a prototype...
[Discipulus]: eh eh.. i was looking in toke.c but dunno if is already used
[shmem]: oh the whitespace in the regex got condensed, meh
[shmem]: should be /^ {7}(\w+)/ or such
[shmem]: ...at least for my perldoc on Linux debian 8

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