This code illustrates using ruby REXML package. It converts J2EE web application deployment descriptor web.xml into Freemind mindmap document.

Genetic Algorithm implementation.

See also "Weighted random selection" for RandomItemSelector class source.

Copies files from nested folders into one source, flat directory.

Is this file the same as that file? The files may or may not be binary. We could compare the modify dates, or the sizes. But, those are not very accurate to know if a file has really changed.

Introducing MD5 Checksum. We can feed the files into Digest::MD5 in binary mode.

This is a great way to do Incremental Backups.

This is also an easy way to verify checksums when downloading files from the internet which list their MD5 Checksums.

You'll need the Digest::MD5 Perl Module.

Class method to read a binary file and copy it to a byte array.

Use this utility to grab lines from a file. Arguments are the input file, starting ling number and ending line number.

List Files in a Directory in C#

When doing a lot of testing in script/console, you often have to reload to pickup changes in DB schema, models and libs. The process of quitting the console and restarting it can become incredibly tedious amidst bugtracking.

note: I don't believe this reloads items in the libs dir

Set's a filter for what files to accept when using JFileChooser.

Weighted random selection from the list.

Don't forget to call itemsChanged after updating list content.