Sponsored Content
Top Forums Programming char constants vs. hard-coding Post 302227074 by shamrock on Wednesday 20th of August 2008 02:34:47 PM
Old 08-20-2008
The statement below is better only due to its generality.
Code:
ptr = strrchr (str, at_sign);

Later on if you wanted to set the at_sign variable to '~' then the change has to made only at one place...saving you a lot of typing; but in the first form all instances of '@' need to be replaced by '~' in all the source files.
Code:
ptr = strrchr (str, '@');

Other than that there is nothing to say that one approach is better or more efficient than the other.
 

8 More Discussions You Might Find Interesting

1. Programming

constants in C/C++

Hi all My question is related to following sample code which tries to change consant value by pointers.(I know it is wrong practice but i am surprised by mis-behaviour) The code: #include <stdio.h> int main() { const int x = 10; int *y; const int * const z = &x; y = (int *)&x;... (2 Replies)
Discussion started by: Shobhit
2 Replies

2. Shell Programming and Scripting

perl: eval and constants

is it possible to use eval to create constants in perl? i cannot seem to get anything to work, and my searches are turning up little to nothing. an example of what i am trying to do is this: 2 arrays: array 1: 'FOOD','NUMBER','OS' array 2: 'pizza','two','unix' loop through the arrays and... (5 Replies)
Discussion started by: effigy
5 Replies

3. Shell Programming and Scripting

I wanted to update a script, more dynamic (just say no to hard coding)...

currently it has the following: bdumpN=`ll /home/apps/oracle/admin/DBprod/bdump/DBprod_j* | grep "$Cdate" | wc -l` If I pass the DBname, I would not have to hardcode it in the script... I can capture the database name by adding the following: DBname=$1 The problem is, I have been unable... (2 Replies)
Discussion started by: mr_manny
2 Replies

4. UNIX for Dummies Questions & Answers

Sending mails to various users without hard coding the email IDS

Hi Can any one help me out ? I am trying to send an autogenerated mail with an attachment to bulk of users using 'MAILX' and 'UNENCODE' . I have used it as follows X " ( cat /sastemp/body.txt; uuencode Test.xls.gz Test.xls.gz ) | mailx -s 'Testing' ' abcd@yahoo.com , efgh@gmail.com ' " ... (9 Replies)
Discussion started by: manas6
9 Replies

5. UNIX for Dummies Questions & Answers

Operation with real variables and constants

Hello there, I'd like to define a variable b equal to 0.5/a where a=0.001, so I wrote something like that: a=0.001; let 'b=0.5/$a'; but it doesn't work... maybe because the variable a has a real value??? Any help will be appreciated!!!:D (1 Reply)
Discussion started by: Giordano Bruno
1 Replies

6. Programming

Adding a single char to a char pointer.

Hello, I'm trying to write a method which will return the extension of a file given the file's name, e.g. test.txt should return txt. I'm using C so am limited to char pointers and arrays. Here is the code as I have it: char* getext(char *file) { char *extension; int i, j;... (5 Replies)
Discussion started by: pallak7
5 Replies

7. Programming

error: invalid conversion from ‘const char*’ to ‘char*’

Compiling xpp (The X Printing Panel) on SL6 (RHEL6 essentially): xpp.cxx: In constructor ‘printFiles::printFiles(int, char**, int&)’: xpp.cxx:200: error: invalid conversion from ‘const char*’ to ‘char*’ The same error with all c++ constructors - gcc 4.4.4. If anyone can throw any light on... (8 Replies)
Discussion started by: GSO
8 Replies

8. Web Development

Using LWP without hard coding password

Hi, I would like to read content from a https site. I have decided to use LWP module in perl. but it throwed 401 Authorization required error. i dont want to hard code the password in my perl code. Is there any way to achieve the authentication without hardcoding the password. Thanks,... (1 Reply)
Discussion started by: pandeesh
1 Replies
Locale::Codes::LangFam(3)				User Contributed Perl Documentation				 Locale::Codes::LangFam(3)

NAME
Locale::Codes::LangFam - standard codes for language extension identification SYNOPSIS
use Locale::Codes::LangFam; $lext = code2langfam('apa'); # $lext gets 'Apache languages' $code = langfam2code('Apache languages'); # $code gets 'apa' @codes = all_langfam_codes(); @names = all_langfam_names(); DESCRIPTION
The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in ISO 639-5. Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5 language family codes will be used. SUPPORTED CODE SETS
There are several different code sets you can use for identifying language families. 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: $lext = code2langfam('apa','alpha'); $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA); The codesets currently supported are: alpha This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages. This is the default code set. ROUTINES
code2langfam ( CODE [,CODESET] ) langfam2code ( NAME [,CODESET] ) langfam_code2code ( CODE ,CODESET ,CODESET2 ) all_langfam_codes ( [CODESET] ) all_langfam_names ( [CODESET] ) Locale::Codes::LangFam::rename_langfam ( CODE ,NEW_NAME [,CODESET] ) Locale::Codes::LangFam::add_langfam ( CODE ,NAME [,CODESET] ) Locale::Codes::LangFam::delete_langfam ( CODE [,CODESET] ) Locale::Codes::LangFam::add_langfam_alias ( NAME ,NEW_NAME ) Locale::Codes::LangFam::delete_langfam_alias ( NAME ) Locale::Codes::LangFam::rename_langfam_code ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangFam::add_langfam_code_alias ( CODE ,NEW_CODE [,CODESET] ) Locale::Codes::LangFam::delete_langfam_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/iso639-5/id.php ISO 639-5 . AUTHOR
See Locale::Codes for full author history. Currently maintained by Sullivan Beck (sbeck@cpan.org). COPYRIGHT
Copyright (c) 2011-2013 Sullivan Beck This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.16.3 2013-02-27 Locale::Codes::LangFam(3)
All times are GMT -4. The time now is 12:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy