Re^2: Adding 2 + 2 (digit-less 1)

That's really an interesting way of getting 1, not 2. Other interesting ways to get 1:

my $one = !@!;
my $one = !!$];
my $one = /.*/;                # Side-effect: Changes $1, etc
my $one = $$/$$;
my $one = ()=$$;
my $one = @{[$$]};
my $one = 'a'^'P';             # Character set specific.
my $one = ord('b')-ord('a');   # Character set specific.
[download]

And 2:

my $two = $one+$one;
my $two = $one<<$one;
my $two = ()=qw(a a);
my $two = @{[ qw(a a) ]};
my $two = ()=/(.*)(.*)/;       # Side-effect: Changes $1, etc
my $two = 'a'^'S';             # Character set specific.
my $two = ord('c')-ord('a');   # Character set specific.
[download]

None of these have side effects unless otherwise noted.
All of these run under use strict;.
All of these run silently under use warnings;.

Comment on Re^2: Adding 2 + 2 (digit-less 1) Select or Download Code

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Re^3: Adding 2 + 2 (digit-less 1) by ambrus (Abbot) on Jan 31, 2007 at 10:15 UTC
There's also `length $=`. I also have a table for all numbers: Re: Re: exactly 390 bytes. It says `log hex c`.	[reply] [d/l] [select]
Re^3: Adding 2 + 2 (digit-less 1) by vrk (Chaplain) on Mar 04, 2007 at 15:26 UTC
More (although not as neat): my $one = !$\|; my $one = cos; # Given that $_ == 0. my $one = cos $\|; my $one = cos atan2 $\|, cos; my $one = sin atan2 sin, $\|; my $one = length $/; # Note: possibly 2 under Windows or DOS. my $one = length $"; my $one = length $;; my $one = length $^L; my $one = $^T/$^T; my $one = @ARGV >= 0; my $one = grep //, ($_); my $one = !undef; # Note: the following may be Unix-only. Will not work if run as root, # as root's UID and GID are (always?) zero. my $one = $</$<; # User ID. my $one = $>/$>; # Effective user ID. my $one = $(/$(; # (Space-separated list of) group ID(s). my $one = $)/$); # (Space-separated list of) effective group ID(s +). [download] Ways to get 2: `my $two = length $:; my $two = $^F; # Note: system-dependent.` [download] -- print "Just Another Perl Adept\n";	[reply] [d/l] [select]