Functional version of Base library

[simeonschaub]

@anon74562486

I think functions like reshape, map, filter, reduce, + operator, etc, can be made functional without ambiguity.

You might think so, but see e.g. Deprecate/remove map(f) and foreach(f) · Issue #35293 · JuliaLang/julia · GitHub. + is also a good example to illustrate the problem, since we do have a unary + already (as in +(42)) in symmetry with unary -, so we can’t add a curried version.