TIL (Today I Learned)

The TIL series of articles contains very short articles documenting something I learned “today”.

Today I learned about Spouge's formula to approximate the factorial.

Today I learned about the symmetry in indexing from the beginning and end of a list with the bitwise invert operator.

Today I learned about the DARPA network challenge and the power of referral systems.

Today I learned that Python 3.5+ supports the operator @ for matrix multiplication.

Today I learned about the math.nextafter method.

Today I learned how to do ceiling division in Python just with //.