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In information theory and computer science , the Levenshtein distance is a string metric for measuring the difference between two sequences.

Levenshtein distance

http://en.wikipedia.org/wiki/Levenshtein_distance
https://live.gnome.org/Vala Introduction Vala is a new programming language that aims to bring modern programming language features to GNOME developers without imposing any additional runtime requirements and without using a different ABI compared to applications and libraries written in C.

Vala