Missing Logic Looping Through Switch Statement Post: 303022580

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Top Forums Programming Missing Logic Looping Through Switch Statement Post 303022580 by RudiC on Monday 3rd of September 2018 03:45:25 AM

09-03-2018

Registered User

Calling random seed repeatedly is sort of overdoing it - or, in your case, even counterproductive. Do it once at program startup - if at all necessary as the compiler / interpreter may do it for you.

I know you are compiling a (C) program. Just as a hint, man awk explicitly says

Quote:

Srand(expr) is useful for repeating pseudo random sequences.

Code:

awk 'BEGIN {srand(NULL); for (i=1; i<=10; i++) print rand()}'
0.131538
0.755605
0.45865
0.532767
0.218959
0.0470446
0.678865
0.679296
0.934693
0.383502
awk 'BEGIN { for (i=1; i<=10; i++) {srand(NULL); print rand()}}'
0.131538
0.131538
0.131538
0.131538
0.131538
0.131538
0.131538
0.131538
0.131538
0.131538

Although you are calling srand() with a sort of random parameter, the current system epoch time, the execution will be that fast epoch seconds will not change - that's why you lose the random effect.

Just remove the srand() from your function.

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ppix::regexp::structure::switch

PPIx::Regexp::Structure::Switch(3pm)			User Contributed Perl Documentation		      PPIx::Regexp::Structure::Switch(3pm)

NAME

       PPIx::Regexp::Structure::Switch - Represent a switch

SYNOPSIS

	use PPIx::Regexp::Dumper;
	PPIx::Regexp::Dumper->new( 'qr{(?(1)foo|bar)}smx' )
	    ->print();

INHERITANCE

       "PPIx::Regexp::Structure::Switch" is a PPIx::Regexp::Structure.

       "PPIx::Regexp::Structure::Switch" has no descendants.

DESCRIPTION

       This class represents a switch, or conditional expression. The condition will be the first child.

METHODS

       This class provides no public methods beyond those provided by its superclass.

SUPPORT

       Support is by the author. Please file bug reports at <http://rt.cpan.org>, or in electronic mail to the author.

AUTHOR

       Thomas R. Wyant, III wyant at cpan dot org

COPYRIGHT AND LICENSE

       Copyright (C) 2009-2012 by Thomas R. Wyant, III

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For more details, see the full
       text of the licenses in the directory LICENSES.

       This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of
       merchantability or fitness for a particular purpose.

perl v5.14.2							    2012-06-06				      PPIx::Regexp::Structure::Switch(3pm)