The course is for all those who wish to learn what PERL Programming is. Hence we bring you this course to get you acquainted with the Nuts and bolts of PERL Programming. Following is the gist of what you will be learning in this course:
Introduction to Perl
·What is Perl ?
·Why to use PERL ?
·Installing ActiveState's ActivePerl on Windows
·Declaring numeric variables
·Declaring character string variables
·Declaring lists and arrays
·Declaring hash and associative arrays
·file test operators
·Understanding operator precedence
·Defining and calling subroutines
·Using arguments with subroutines
References and dereference
·Understanding values and references
·Defining array references
·Defining hash references
·Building mixed data structures
·Reading a input file
·Writing to output file
·Understanding Standard Input/Output.
Introduction to Perl's powerful regular expressions
·Understanding regular expressions
·Searching and replacing text with regular expressions
·Matching classes of characters
·Creating arrays with split
Execute system commands
·Multiple ways of executing systems commands
·Understanding special variables
-How to use special variables.
Let’s understand the gist of what is PERL Programming:
What is Perl?
·Perl is a stable, cross platform programming language.
·Though Perl is not officially an acronym but few people used it as Practical Extraction and Report Language.
·It is used for mission critical projects in the public and private sectors.
·Perl is an Open Source software, licensed under its Artistic License, or the GNU General Public License (GPL).
·Perl was created by Larry Wall.
·Perl 1.0 was released to usenet's in 1987
·At the time of writing thi tutorial, latest version of perl is 5.16.2
·Perl is listed in the Oxford English Dictionary.
PC Magazine named Perl a finalist for its 1998 Technical Excellence Award in the Development Tool category.
·Perl takes the best features from other languages, such as C, awk, sed, sh, and BASIC, among others.
·Perls database integration interface DBI supports third-party databases including Oracle, Sybase, Postgres, MySQL and others.
·Perl works with HTML, XML, and other mark-up languages.
·Perl supports Unicode.
·Perl is Y2K compliant.
·Perl supports both procedural and object-oriented programming.
·Perl interfaces with external C/C++ libraries through XS or SWIG.
·Perl is extensible. There are over 20,000 third party modules available from the Comprehensive Perl Archive Network (CPAN).
·The Perl interpreter can be embedded into other systems.
Perl and the Web:
Perl is Interpreted:
Perl is an interpreted, which means that your code can be run as is, without a compilation stage that creates a non portable executable program.
Traditional compilers convert programs into machine language. When you run a Perl program, it's first compiled into a byte code, which is then converted ( as the program runs) into machine instructions. So it is not quite the same as shells, or Tcl, which are strictly interpreted without an intermediate representation.
Neither it is like most versions of C or C++, which are compiled directly into a machine dependent format. It is somewhere in between, along with Python and awk and Emacs .elc files.
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