Topic: Software engineering
The Fall 2017 edition of ;login:, the USENIX magazine, had a column by David Beazley describing Aur Saraf's PyCon Israel 2017 live coding performance of a brainfuck interpreter. Saraf's technique basically looks like:
(defun foo (x)
(+ 1 x))
(assert (eql (foo 1) 2))
(assert (eql (foo 2) 3))
The code and tests live in the same file, so any time
you eval-buffer or equivalent, the asserts
are evaluated.
This is a neat technique for live coding scenarios, such as programming interviews.