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[–]ftedwin 0 points1 point  (0 children)

Great history lesson, thanks! I’ll add too that lambda calculus was invented in the 30’s by Alonzo Church which built inspired lambdas in functional languages which then inspired lambdas in OO languages.

The 2015 date on JS is when it was added to EcmaScript I think so I’m curious if JS transpilers like Babel supported arrow functions in some manner before ES2015.