FormLabs, but they start at $2500.
FormLabs, but they start at $2500.
Good question!
The real answer seems to be “right” and “left”.
ALGOL-60 had its own keyboard (sort of): https://retrocomputing.stackexchange.com/questions/16082/was-there-an-input-device-capable-of-entering-all-algol-60-symbols-with-correct
Another that’s been around forever and still has an active community: GemStone IV
Factory pattern can return a mock type for testing or a production type, as needed, which makes it possible to unit test the code that uses the produced object.
This quick guide explains it well. Then it improves on it by explaining dependency injection.
https://github.com/google/guice/wiki/Motivation