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Interpolation using awk

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Top Forums Shell Programming and Scripting Interpolation using awk
# 8  
Old 04-05-2012
Now I get it,
Thanks for all your help Smilie
Quote:
Originally Posted by Scrutinizer
j is used for the (known) x coordinates, i is used for all (inter/extrpolated) coordinates, the left x-coordinate is called s and the right x-coordinate is t.

so this checks to see if a shift to use the next pair of coordinates is necessary and this is the case if i>t ( which means i>I[j+1] ) unless the coordinates we then would need to shift to (from I[j] and I[j+1] to I[j+1] and I[j+2]), do not exist. This will not be the case for I[j+1], but if I[j+2] does not exist, then we have reached the end of the array I.

If this is the case (then n lies to the right of the range of coordinates) then in fact we are switching automatically from interpolation to extrapolation. The same formula is used for extrapolation as for interpolation.
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LEARN ABOUT CENTOS

ppix::regexp::token::interpolation

PPIx::Regexp::Token::Interpolation(3)			User Contributed Perl Documentation		     PPIx::Regexp::Token::Interpolation(3)

NAME

       PPIx::Regexp::Token::Interpolation - Represent an interpolation in the PPIx::Regexp package.

SYNOPSIS

	use PPIx::Regexp::Dumper;
	PPIx::Regexp::Dumper->new('qr{$foo}smx')->print();

INHERITANCE

       "PPIx::Regexp::Token::Interpolation" is a PPIx::Regexp::Token::Code.

       "PPIx::Regexp::Token::Interpolation" has no descendants.

DESCRIPTION

       This class represents a variable interpolation into a regular expression. In the "SYNOPSIS" the $foo would be represented by an object of
       this class.

METHODS

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

   ppi
       This convenience method returns the PPI::Document representing the content. This document should be considered read only.

       Note that the content of the returned PPI::Document may not be the same as the content of the original
       "PPIx::Regexp::Token::Interpolation". This can happen because interpolated variable names may be enclosed in curly brackets, but this does
       not happen in normal code. For example, in "/${foo}bar/", the content of the "PPIx::Regexp::Token::Interpolation" object will be '${foo}',
       but the content of the "PPI::Document" will be '$foo'.

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) 2009-2013 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 v5.16.3							    2014-06-10				     PPIx::Regexp::Token::Interpolation(3)