Why a Sudoku-solving program looks smart: Recursion, backtracking, and the idea of 'trying from the most likely failure points'

I was thinking about a program to solve Sudoku.You fill a 9x9 grid with numbers from 1 to 9. The same number must not be ...
Ars Technica

Python XML parsing with minidom - help with recursive names

I'm about 98% done building an app for parsing a certain network vendor's XML dumps, and need some help with group objects I know I should have used etree, but minidom seemed too straight forward to ...