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Always interesting to see what really early Go code looked like: https://blog.golang.org/experiment Go 1 looks so simple that it's natural to assume that it was always that simple. But the reality is that it started out much cruftier, and only became simple through careful refinement.
"One problem with unconstrained experimentation, though, is that as a client you have to program to the union of all the possible implementations you might encounter." I'm hoping this signals that map/filter/reduce will be builtins (or at least stdlib) in Go 2
