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Full Discussion: while command question
Top Forums Shell Programming and Scripting while command question Post 302317321 by jim mcnamara on Monday 18th of May 2009 05:10:24 PM
Old 05-18-2009
Code:
while :

evaluates to while true
Code:
let i=1
while :
do
   echo $i
   i=$(( $i + 1))
done

 

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ExtUtils::Typemaps::OutputMap(3)			User Contributed Perl Documentation			  ExtUtils::Typemaps::OutputMap(3)

NAME
ExtUtils::Typemaps::OutputMap - Entry in the OUTPUT section of a typemap SYNOPSIS
use ExtUtils::Typemaps; ... my $output = $typemap->get_output_map('T_NV'); my $code = $output->code(); $output->code("..."); DESCRIPTION
Refer to ExtUtils::Typemaps for details. METHODS
new Requires "xstype" and "code" parameters. code Returns or sets the OUTPUT mapping code for this entry. xstype Returns the name of the XS type of the OUTPUT map. cleaned_code Returns a cleaned-up copy of the code to which certain transformations have been applied to make it more ANSI compliant. targetable This is an obscure optimization that used to live in "ExtUtils::ParseXS" directly. In a nutshell, this will check whether the output code involves calling "set_iv", "set_uv", "set_nv", "set_pv" or "set_pvn" to set the special $arg placeholder to a new value AT THE END OF THE OUTPUT CODE. If that is the case, the code is eligible for using the "TARG"-related macros to optimize this. Thus the name of the method: "targetable". If the optimization can not be applied, this returns undef. If it can be applied, this method returns a hash reference containing the following information: type: Any of the characters i, u, n, p with_size: Bool indicating whether this is the sv_setpvn variant what: The code that actually evaluates to the output scalar what_size: If "with_size", this has the string length (as code, not constant) SEE ALSO
ExtUtils::Typemaps AUTHOR
Steffen Mueller "<smueller@cpan.org"> COPYRIGHT &; LICENSE Copyright 2009, 2010, 2011, 2012 Steffen Mueller This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.16.3 2012-11-19 ExtUtils::Typemaps::OutputMap(3)
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