Fifty shades of `sign`
The Zen of Python says “there should be one -- and preferably only one -- obvious way to do it”, but what if there's a dozen obvious ways to do it?
About Rodrigo Girão Serrão
Rodrigo has always been fascinated by problem solving and that is why he picked up programming – so that he could solve more problems. He also loves sharing knowledge, and that is why he spends so much time writing articles @ mathspp.com and giving workshops and courses.
His main areas of scientific interest are mathematics (numerical analysis in particular) and programming in general (with a preference for the Python and APL languages), but Rodrigo also enjoys reading fantasy books, watching silly comedy movies and eating chocolate.