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Shell Programming and Scripting
What this while loop is doing?
Post 302939983 by Corona688 on Tuesday 31st of March 2015 11:24:04 AM
03-31-2015
Please use code tags, not icode tags, that is the 
button.
First it declares Dis_array as an array, set -A is how it's done in KSH -- other shells use ARRAY=( value1 value2 value3 ).
It loops while while $count is less than the number of elements in the array, ${#Dis_array[*]}. It looks like gibberish the first time you see something like that, but it's similar to the way commandline arguments are handled -- $* for "all arguments", ${array[*]} for "all elements", $# for the number of arguments, ${#array[*]} for the number of elements. Actually I'd use ${#array[@]} since that doesn't rely on splitting.
What I don't understand is where any elements in the array are coming from. It looks like it's setting it to exactly one value -- 95. Perhaps they didn't really need to use an array here. All they're using is the first element.
button.First it declares Dis_array as an array, set -A is how it's done in KSH -- other shells use ARRAY=( value1 value2 value3 ).
It loops while while $count is less than the number of elements in the array, ${#Dis_array[*]}. It looks like gibberish the first time you see something like that, but it's similar to the way commandline arguments are handled -- $* for "all arguments", ${array[*]} for "all elements", $# for the number of arguments, ${#array[*]} for the number of elements. Actually I'd use ${#array[@]} since that doesn't rely on splitting.
What I don't understand is where any elements in the array are coming from. It looks like it's setting it to exactly one value -- 95. Perhaps they didn't really need to use an array here. All they're using is the first element.
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LEARN ABOUT DEBIAN
test::data::array
Array(3pm) User Contributed Perl Documentation Array(3pm) NAME
Test::Data::Array -- test functions for array variables SYNOPSIS
use Test::Data qw(Array); DESCRIPTION
Functions array_any_ok( ITEM, ARRAY [, NAME] ) Ok if any element of ARRAY is ITEM. array_none_ok( ITEM, ARRAY [, NAME] ) Ok if no element of ARRAY is ITEM. array_once_ok( ITEM, ARRAY [, NAME] ) Ok if only one element of ARRAY is ITEM. array_multiple_ok( ITEM, ARRAY [, NAME] ) Ok if more than one element of ARRAY is ITEM. array_max_ok( NUMBER, ARRAY [, NAME] ) Ok if all elements of ARRAY are numerically less than or equal to NUMBER. array_min_ok( NUMBER, ARRAY [, NAME] ) Ok if all elements of ARRAY are numerically greater than or equal to NUMBER. array_maxstr_ok( ITEM, ARRAY [, NAME] ) Ok if all elements of ARRAY are asciibetically less than or equal to MAX. array_minstr_ok( ITEM, ARRAY [, NAME] ) Ok if all elements of ARRAY are asciibetically greater than or equal to MAX. array_sum_ok( SUM, ARRAY [, NAME] ) Ok if the numerical sum of ARRAY is SUM. array_empty_ok( ARRAY [, NAME] ) Ok if the array contains no elements. array_length_ok( ARRAY, LENGTH [, NAME] ) Ok if the array contains LENGTH number of elements. array_sortedstr_ascending_ok( ARRAY, [, NAME] ) Ok if each succeeding element is asciibetically greater than or equal to the one before. array_sortedstr_descending_ok( ARRAY, [, NAME] ) Ok if each succeeding element is asciibetically less than or equal to the one before. array_sorted_ascending_ok( ARRAY, [, NAME] ) Ok if each succeeding element is numerically greater than or equal to the one before. array_sorted_descending_ok( ARRAY, [, NAME] ) Ok if each succeeding element is numerically less than or equal to the one before. SEE ALSO
Test::Data, Test::Data::Scalar, Test::Data::Function, Test::Data::Hash, Test::Builder SOURCE AVAILABILITY
This source is in Github: http://github.com/briandfoy/test-data/tree/master AUTHOR
brian d foy, "<bdfoy@cpan.org>" COPYRIGHT AND LICENSE
Copyright (c) 2002-2009 brian d foy. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2009-02-12 Array(3pm)