[robocat]

> Someone not familiar or comfortable with "map" should not be working as a professional programmer today.

I completely disagree - you are measuring the quality of a programmer on a single dimension.

I have worked with very weak programmers that produce gold e.g. great at pulling a team together, great at producing outcomes that clients love, great at focusing on features that sell.

I have also worked with great programmers that just stick to what they know - they don't know map() because they concentrate on being productive rather than continually chasing the next greatest language or library.

I have also worked with technically awesome programmers that produce absolute crap e.g. struggle to communicate, struggle to make good engineering compromises, struggle to understand requirements. One smart guy was so creepy no women could work with him which meant he was actually pretty useless - I saw one friend who worked as a consultant there hide under her desk to avoid him!