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.IX Title "Perl::Critic::Policy::BuiltinFunctions::ProhibitSleepViaSelect 3pm"
.TH Perl::Critic::Policy::BuiltinFunctions::ProhibitSleepViaSelect 3pm 2023-07-26 "perl v5.38.0" "User Contributed Perl Documentation"
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.SH NAME
Perl::Critic::Policy::BuiltinFunctions::ProhibitSleepViaSelect \- Use Time::HiRes instead of something like "select(undef, undef, undef, .05)".
.SH AFFILIATION
.IX Header "AFFILIATION"
This Policy is part of the core Perl::Critic
distribution.
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Conway discourages the use of \f(CWselect()\fR for performing non-integer
sleeps.  Although documented in perlfunc, it's something
that generally requires the reader to read \f(CW\*(C`perldoc \-f select\*(C'\fR to
figure out what it should be doing.  Instead, Conway recommends that
you use the \f(CW\*(C`Time::HiRes\*(C'\fR module when you want to sleep.
.PP
.Vb 1
\&    select undef, undef, undef, 0.25;         # not ok
\&
\&    use Time::HiRes;
\&    sleep( 0.25 );                            # ok
.Ve
.SH CONFIGURATION
.IX Header "CONFIGURATION"
This Policy is not configurable except for the standard options.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Time::HiRes.
.SH AUTHOR
.IX Header "AUTHOR"
Graham TerMarsch <graham@howlingfrog.com>
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (c) 2005\-2011 Graham TerMarsch.  All rights reserved.
.PP
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.