08-05-2009
Geervani,
I do hope this is what you are trying to do?
The var. N specifies the parameter number to display.
#!/bin/ksh
N=2
echo $* |sed "s/ /\n/g" |grep -n "" |grep ^$N: |awk -F ':' '{print $2}'
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LEARN ABOUT DEBIAN
perl::critic::policy::builtinfunctions::prohibitstringyeval
Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEUser3Contributed Perl DocuPerl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval(3pm)
NAME
Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval - Write "eval { my $foo; bar($foo) }" instead of "eval "my $foo; bar($foo);"".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The string form of "eval" is recompiled every time it is executed, whereas the block form is only compiled once. Also, the string form
doesn't give compile-time warnings.
eval "print $foo"; # not ok
eval {print $foo}; # ok
CONFIGURATION
There is an "allow_includes" boolean option for this Policy. If set, then strings that look like they only include a single "use" or
"require" statement (with the possible following statement that consists of a single number) are allowed. With this option set, the
following are flagged as indicated:
eval 'use Foo'; # ok
eval 'require Foo'; # ok
eval "use $thingy;"; # ok
eval "require $thingy;"; # ok
eval "use $thingy; 1;"; # ok
eval "require $thingy; 1;"; # ok
eval 'use Foo; blah;'; # still not ok
eval 'require Foo; 2; 1;'; # still not ok
eval 'use $thingy;'; # still not ok
eval 'no Foo'; # still not ok
If you don't understand why the number is allowed, see Perl::Critic::Policy::ErrorHandling::RequireCheckingReturnValueOfEval.
This option inspired by Ricardo SIGNES' Perl::Critic::Policy::Lax::ProhibitStringyEval::ExceptForRequire.
SEE ALSO
Perl::Critic::Policy::ControlStrucutres::RequireBlockGrep
Perl::Critic::Policy::ControlStrucutres::RequireBlockMap
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.14.2 2012-06-07 Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval(3pm)