String Related Built-in Functions

This section describes built-in functions to manipulate strings: chop(), length(), index(), substr(), split().

Here are some commonly used built-in functions to manipulate strings:

1. chop() - A function to remove the last character of the string represented by the specified variable, and return the chopped character:

rc = chop(variable);

2. length() - A function to return the size of the specified string:

rc = length(string);

3. index() - A function to return the position of the first occurrence of the specified substring in the specified string, with an optional starting position:

rc = index(string,substring,starting_position);

4. substr() - A function to return a substring in the specified string, starting at the specified offset, with an optional length:

rc = substr(string,offset,length);

5. split() - A function to split the specified string into a list of substring with the specified delimiter:

(list) = split(delimiter,string);

Table of Contents

 About This Book

 Perl on Linux Systems

 ActivePerl on Windows Systems

 Data Types: Values and Variables

 Expressions, Operations and Simple Statements

 User Defined Subroutines

 Perl Built-in Debugger

 Name Spaces and Perl Module Files

 Symbolic (or Soft) References

 Hard References - Addresses of Memory Objects

 Objects (or References) and Classes (or Packages)

 Typeglob and Importing Identifiers from Other Packages

String Built-in Functions and Performance

String Related Built-in Functions

 Performance of Perl substr() and index()

 Performance of Java substring() and indexOf()

 File Handles and Data Input/Output

 Open Files in Binary Mode

 Open Directories and Read File Names

 File System Functions and Operations

 Converting Perl Script to Executable Binary

 Using DBM Database Files

 Using MySQL Database Server

 Socket Communication Over the Internet

 XML::Simple Module - XML Parser and Generator

 XML Communication Model

 SOAP::Lite - SOAP Server-Client Communication Module

 Perl Programs as IIS Server CGI Scripts

 CGI (Common Gateway Interface)

 XML-RPC - Remote Procedure Call with XML and HTTP

 RPC::XML - Perl Implementation of XML-RPC

 Integrating Perl with Apache Web Server

 CGI.pm Module for Building Web Pages

 LWP::UserAgent and Web Site Testing

 References

 PDF Printing Version