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Full Discussion: Alphabetical help.
Homework and Emergencies Homework & Coursework Questions Alphabetical help. Post 302548749 by yazu on Friday 19th of August 2011 08:06:50 AM
Old 08-19-2011
Ok. Then you can use "[[ ... ]]" construction. Inside brackets you can use < and > without backslashes for string comparisons and &&, || as boolean operator without additional brackets. So:
Code:
if [[ "$letter" < Z && "$letter" > A ]]; then

Code:
while [[ "$letter" == Z  ||  "$letter" < Z  &&  "$letter" != 0 ]];

Code:
if [[ "$letter2" < "$letter" ]]; then

Code:
[[ "$letter2" == 0 ]]

1. It's a very good habit to use double quotes around variables. Sometimes you must not use them but it is the special case - when a variable emulates an array.
2. And you don't need use quotes around "barewords" - in shell everything is strings. You can but you shouldn't because of
3. Your 0 is a string really and you don't perform any arithmetic operations. So just use bash string comparison operators: "<" ">" "!=" and "==". And if you want to use quotes around string literal, then use them around zero too (but you really shouldn't - it's just leads to confusion).
4. Double quotes around variables are not to convert them to strings but just save possible spaces inside their values.
Last edited by yazu; 08-19-2011 at 09:12 AM..
 

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LEARN ABOUT MOJAVE

locale::codes::language5.18

Locale::Codes::Language(3pm)				 Perl Programmers Reference Guide			      Locale::Codes::Language(3pm)

NAME

       Locale::Codes::Language - standard codes for language identification

SYNOPSIS

	  use Locale::Codes::Language;

	  $lang = code2language('en');	      # $lang gets 'English'
	  $code = language2code('French');    # $code gets 'fr'

	  @codes   = all_language_codes();
	  @names   = all_language_names();

DESCRIPTION

       The "Locale::Codes::Language" module provides access to standard codes used for identifying languages, such as those as defined in ISO 639.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639 two-
       letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying languages. A code set may be specified using either a name, or a constant
       that is automatically exported by this module.

       For example, the two are equivalent:

	  $lang = code2language('en','alpha-2');
	  $lang = code2language('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha-2, LOCALE_LANG_ALPHA_2
	   This is the set of two-letter (lowercase) codes from ISO 639-1, such as 'he' for Hebrew.  It also includes additions to this set
	   included in the IANA language registry.

	   This is the default code set.

       alpha-3, LOCALE_LANG_ALPHA_3
	   This is the set of three-letter (lowercase) bibliographic codes from ISO 639-2 and 639-5, such as 'heb' for Hebrew.	It also includes
	   additions to this set included in the IANA language registry.

       term, LOCALE_LANG_TERM
	   This is the set of three-letter (lowercase) terminologic codes from ISO 639.

ROUTINES

       code2language ( CODE [,CODESET] )
       language2code ( NAME [,CODESET] )
       language_code2code ( CODE ,CODESET ,CODESET2 )
       all_language_codes ( [CODESET] )
       all_language_names ( [CODESET] )
       Locale::Codes::Language::rename_language  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::Language::add_language  ( CODE ,NAME [,CODESET] )
       Locale::Codes::Language::delete_language  ( CODE [,CODESET] )
       Locale::Codes::Language::add_language_alias  ( NAME ,NEW_NAME )
       Locale::Codes::Language::delete_language_alias  ( NAME )
       Locale::Codes::Language::rename_language_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::Language::add_language_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::Language::delete_language_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-2/
	   Source of the ISO 639-2 codes.

       http://www.loc.gov/standards/iso639-5/
	   Source of the ISO 639-5 codes.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

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) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2014-01-06					      Locale::Codes::Language(3pm)
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