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wog

by wog (Curate)
on Mar 25, 2001 at 08:16 UTC ( #66950=user: print w/replies, xml ) Need Help??

"It's sad. I always find things in the last place I look for them."

@gatech.edu

my scratch pad

perl -e '$|--;$.=q$.$;while($i!=0){$i=(time-$^T)%60;print"\r".$.x$i}'

# -- MeaningOfLifeTheUniverseAndEverything.pm -- package MeaningOfLifeTheUniverseAndEverything; use strict; sub _create { bless \(my $_42 = 42) } sub _value { 42 } use overload '0+' => \&_value, 'nomethod' => \&_create; sub import { overload::constant integer => \&_create, float => \&_create; } sub unimport { use Carp; croak "You can't get rid of the Meaning of Life, " ."the Universe, and Everything"; } q{ 32 }; __END__ =head1 NAME MeaningOfLifeTheUniverseAndEverything =head1 SYNOPSIS use MeaningOfLifeTheUniverseAndEverything; =head1 DES‎CRIP‎TION This module replaces all other numbers with the answer to the ultimate quesiton of life, the universe and everything throughout the program it is run from. =head1 NOTE It is a fatal error to attempt to get rid of the meaning of life, the universe and everything. =head1 BUGS This module cannot turn nothing (a literal 0) into the answer. This is of course perl's fault, since anything associated with HHGTG wouldn't have such obvious faults (unless the guide gets taken over by some evil company or something like that.) =head1 SEE ALSO I<The Hitchhiker's Guide to the Galaxy>. =cut # -- test.pl -- #!/usr/bin/perl -w use strict; use MeaningOfLifeTheUniverseAndEverything; sub value { (defined $_[0]) ? $_[0] : 'undef'; } sub show { foreach my $expr (@_) { print $expr, " = ", value(eval $expr), "\n"; print "(error: $@)\n" if $@; } } show split /\n/ => <<'END'; 4.2 * 10 4.2 * 9 + 1 2 + 2 42 - 1 3 % 2 0 END

sub warningless_require_module { # * untested * use File::Spec; use Carp; my $module = shift; my @module = split /::/, $module; $module[-1] .= ".pm"; my $file; for (@INC) { $file = File::Spec->catfile($_,@module); last if -f $file; } if (!-f _) { die "Can't locate $file in \@INC (\@INC contains @INC)\n"; } my $res; { local $^W = 0; $res = do $file; } unless ($res) { die $@ if $@; croak "file didn't return a true value"; } $INC{File::Spec->catfile(@module)} = $file; { no strict 'refs'; foreach my $raw_name (keys %{$module."::"}) { my $name = $module."::".$raw_name; if (defined &{$name}) { my $sub = \&{$name}; *{$name} = sub { local $^W = 0; &$meth; }; } } } return $res; }

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[ambrus]: So that, or if you really want something agnostic to the loop, then use curl multi. Its interface is quite reasonable (unless you use an old version),
[ambrus]: though it's very C-like (serious use of varargs so easy to pass the wrong type), and there are some minor problems (busy loop because it doesn't use the same timer as your event loop, so you have to artificially delay timer callbacks by a small amount).

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