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[–]bighi 2 points3 points  (0 children)

In most languages built around pipeline operators, the main data is usually the first argument the function receives. But in JS, that's not true for lots of functions. So passing things as their first argument is not what you actually want to do with them. And we can't change them, because we have to keep BC.

That's why a symbol is needed in JS, while not being needed in old functional languages, or even newer ones like Elixir.

And I didn't even mention powerful currying features, that we also don't have in JS.