Perl $_ vs. $_[]
For a beginner, Perl can be a frightening language. This is largely due the numerous special variables used in perl. Once a programmer understands the special variables, he/she begins to…
What is XML
Extensible Markup Language (XML) is a markup language which allows users to structure, describe, and interchange data on the Internet in clearly defined way. Markup can be used to give…
How to change nodepad++ theme
Notepad++ is a simple lightweight editor that packs a punch. When using any editor, you would want customize its look and feel to suit your comfort. Notepad++ comes with several…
Merging and unmerging cells in Excel
Steps to merge cells select desired cells click on Format and choose Cells. Format cells window should be open now click on the Alignment tab check Merge cells under Text…
Node Package Manager (npm)
Node Package Manager (npm) comes bundled with Node. It allows you do search Node repositories for packages and modules. Anything that is searchable on search.nodejs.org is also searchable by npm.…
Quick Introduction to JSON
JavaScript Object Notation (JSON) is a lightweight standard for data interchange. It offers several advantages over XML for data interchange such as it can be used for serializing and transmitting…
Quick Introduction to BioPerl
BioPerl is a collection of Perl modules that facilitate the development of Perl scripts for bioinformatics. It is open source and widely used in the bioinformatics community. Bioperl provides software…
Installing Perl/CGI on Microsoft Windows
My Configurations My system is configured as follows: Download ActivePerl Download windows MSI version from http://www.activestate.com/store/activeperl/download Install ActivePerl Double click on the downloaded file to install it. By default it…
Perl: Couldn’t spawn child process
When using Apache and Perl on Windows, it is common to get Couldn’t spawn child process error. The solution is very simple. Verify that you have using the correct directive…
Reading command-line input in C
Following a program which echos whatever you type in the command line. argc is the count of the number of command-line arguments. argv is array of vectors. Each word is…