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File upload with Sinatra
How to write a simple file uploader with sinatra.
Image Manipulation With CImg
Learn how to load and manipulate images in c++ using CImage
Generating animated clouds using Perlin noise.
Learn how to generate cloud-like animated textures by manipulating bitmap data.
Create your own IM bot
How to create an IM bot using the Ruby language and XMPP.
Using HTTP Sockets with RESTful Services
Learn how making HTTP requests to RESTful web services is useful with the Last.fm API.