#PERL CHAR MATH HOW TO#
#PERL CHAR MATH INSTALL#

A comment begins with a ' #' and lasts until the end of line.

Line 1 to 3 are optional, but recommended for writing robust program.

' use warning' instruct Perl to display all the warning messages. ' use strict' instruct Perl to terminate the program immediately when an error occurs.

#PERL CHAR MATH HOW TO#

Line 2 and 3 are directive (or pragma) to instruct Perl on how to handle errors.Line 1, called shebang, is meant for Unixes, which specifies the location of the Perl Interpreter.Print 'Hello world, ', 'Again!', ' ' # Print another message Use warnings # Display all warning messages Use a programming text editor (such as NotePad++, PSPad, TextPad) to enter the following source codes and save as ' ': 1 The path of Perl interpreter ' perl.exe' must be in included in the PATH environment variable. For Unix systems: Pre-installed in all Unixes.Select 'Category' ⇒ 'Interpreters' ⇒ 'perl').

#PERL CHAR MATH INSTALL#

For Windows systems: Can be installed as part of CYGWIN (Read How to install CYGWIN.

There are many ways to get the Perl Interpreter: Popular sites for Perl are Perl documentation is available at.

Many Perl utilities and add-ons are available at CPAN (Comprehensive Perl Archive Network.

Perl 5 supports Object-oriented programming.

Perl also has symbolic debugger, built-in support for database management, and etc.

Perl provides a powerful regular expression facility to support text processing and report generation.

Perl is an interpreted language, and therefore platform-independent. You can run Perl scripts in any platform (Unix, Windows, Mac) where Perl interpreter is available.

You can write a Perl program fairly quickly in a few lines of codes. Perl is much more expressive than these languages ('maximum expressivity', 'There is more than one way to do it').

'Perl is the Swiss Army Knife of programming languages: powerful and adaptable.' Perl is a mixture of C, Unix's shell script, awk, sed, and more.

Perl, stands for Practical Extraction and Report Language, originally meant for text formatting and processing, has grown over times to cover system administration, network, web and database programming, glue between systems and languages (system integration and rapid prototyping), bioinformatics, data mining, and even application development. Perl was created by Larry Wall in 1987, based on his earlier Unix system administrative tool called awk.

Perl char math