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Top Forums Shell Programming and Scripting How to generate all combinations of group lists at the same time? Post 302995916 by nengcheng on Friday 14th of April 2017 08:02:59 PM
Old 04-14-2017
How to generate all combinations of group lists at the same time?

Hi, everyone

I have a group lists like this (more lines are omitted:
Code:
a b c d 
E F G H
....

I want to generate all combinations of two elements in each group line. What I expected is this:
Code:
a b
a c
a d
b c
b d
c d
E F
E G
E H
F G
F H
G H
..

Any programing language is appreciated.
 

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Locale::Currency(3perl) 				 Perl Programmers Reference Guide				   Locale::Currency(3perl)

NAME
Locale::Currency - standard codes for currency identification SYNOPSIS
use Locale::Currency; $curr = code2currency('usd'); # $curr gets 'US Dollar' $code = currency2code('Euro'); # $code gets 'eur' @codes = all_currency_codes(); @names = all_currency_names(); DESCRIPTION
The "Locale::Currency" module provides access to standard codes used for identifying currencies and funds, such as those defined in ISO 4217. Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 4217 three-letter codes will be used. SUPPORTED CODE SETS
There are several different code sets you can use for identifying currencies. The ones currently supported are: alpha This is a set of three-letter (uppercase) codes from ISO 4217 such as EUR for Euro. Two of the codes specified by the standard (XTS which is reserved for testing purposes and XXX which is for transactions where no currency is involved) are omitted. This code set is identified with the symbol "LOCALE_CURR_ALPHA". This is the default code set. num This is the set of three-digit numeric codes from ISO 4217. This code set is identified with the symbol "LOCALE_CURR_NUMERIC". ROUTINES
code2currency ( CODE [,CODESET] ) currency2code ( NAME [,CODESET] ) currency_code2code ( CODE ,CODESET ,CODESET2 ) all_currency_codes ( [CODESET] ) all_currency_names ( [CODESET] ) Locale::Currency::rename_currency ( CODE ,NEW_NAME [,CODESET] ) Locale::Currency::add_currency ( CODE ,NAME [,CODESET] ) Locale::Currency::delete_currency ( CODE [,CODESET] ) Locale::Currency::add_currency_alias ( NAME ,NEW_NAME ) Locale::Currency::delete_currency_alias ( NAME ) Locale::Currency::rename_currency_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Currency::add_currency_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Currency::delete_currency_code_alias ( CODE [,CODESET] ) These routines are all documented in the Locale::Codes man page. SEE ALSO
Locale::Codes Locale::Constants http://www.iso.org/iso/support/currency_codes_list-1.htm The ISO 4217 data. AUTHOR
See Locale::Codes for full author history. Currently maintained by Sullivan Beck (sbeck@cpan.org). COPYRIGHT
Copyright (c) 1997-2001 Canon Research Centre Europe (CRE). Copyright (c) 2001 Michael Hennecke Copyright (c) 2001-2010 Neil Bowers Copyright (c) 2010-2011 Sullivan Beck This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2011-09-26 Locale::Currency(3perl)
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