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Full Discussion: Redirect string from bash stderr to user stdin
Top Forums Shell Programming and Scripting Redirect string from bash stderr to user stdin Post 302998232 by fredestet on Saturday 27th of May 2017 12:00:04 PM
Old 05-27-2017
but that one-liner (which wouldn't work like that anyways) contains two calls of command. i would like to know, for several reasons, whether this can be done with a single call of command.
Last edited by fredestet; 05-27-2017 at 07:42 PM..
 

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LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::prohibitcomplexmappings

Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMUsernContributed Perl DoPerl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings - Map blocks should have a single statement.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       The map function can be confusing to novices in the best of circumstances.  Mappings with multiple statements are even worse.  They're also
       a maintainer's nightmare because any added complexity decreases readability precipitously.  Why?  Because map is traditionally a one-liner
       converting one array to another.  Trying to cram lots of functionality into a one-liner is a bad idea in general.

       The best solutions to a complex mapping are: 1) write a subroutine that performs the manipulation and call that from map; 2) rewrite the
       map as a for loop.

CAVEATS

       This policy currently misses some compound statements inside of the map.  For example, the following code incorrectly does not trigger a
       violation:

	   map { do { foo(); bar() } } @list

CONFIGURATION

       By default this policy flags any mappings with more than one statement.	While we do not recommend it, you can increase this limit as
       follows in a .perlcriticrc file:

	   [BuiltinFunctions::ProhibitComplexMappings]
	   max_statements = 2

AUTHOR

       Chris Dolan <cdolan@cpan.org>

CREDITS

       Initial development of this policy was supported by a grant from the Perl Foundation.

COPYRIGHT

       Copyright (c) 2007-2011 Chris Dolan.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2014-06-09	Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings(3)
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