Pravin Paratey

Palindromic sub-sequences in python

This bit of python code returns all palindromic subsequences in the input string.

Join a list of integers in Python

How do you run a string join on a list of integers in Python? After googling for about 10 mins, I gave up and did this. I am sure there is a better way of doing it!

Writing a spider in 10 mins using Scrapy

I came across Scrapy a few days back and have grown to really love it. This tutorial will illustrate how you can write a simple spider using Scrapy to scrape data off Paul Smith. All this in 10 minutes.

Using PHP and ImageMagick to resize images

Today, I had to write some code to generate thumbnails in PHP. The php-gd library wasn't installed and I had to work with ImageMagick. Not the most elegant of solutions, but it works *shrug*

Script to generate URS from Wikipedia

A person’s URS is a phrase that could be used instead of his/her usual name in all circumstances, which makes it absolutely clear who he/she is. ex. Bhagat Singh was executed by the British in 1931.

Snippet to generate a random word in python

Since I haven’t posted here in a while, I figured I’d whip up this example real quick. It illustrates the usage of the random function.

Java Regex Matching

This snippet illustrates Regular Expressions in Java. Um, I didn't realize matcher.find() had to be called. Wasted half a day!

Simple Webserver in Python

This snippet illustrates how one can easily build a HTTP Web Server in python. self.args will contain the query parameters. WebServer.py1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 [...]

XML DOM in Java

Of late, I have been working with Java. And one of the issues that I faced was XML parsing. With so many libraries available, I decided to stick to jaxp. What follows is sample code to Tree walk over the nodes: TreeWalk.java1 2 3 4 5 6 7 8 9 10 11 12 13 14 [...]

Hacking wp-syntax plugin to show header

I was recently asked how I got the wp-syntax plugin to show a header like so: test.cpp1 2 3 int main() { return 0; } To show the test.cpp file name, I modified the wp-syntax.php file (present in /wp-content/plugins/wp-syntax/) like so: Changed the regular expression in the wp_syntax_before_filter function from: wp-syntax.phpfunction wp_syntax_before_filter($content) { return preg_replace_callback( [...]