I'm trying to create a function on the fly that would return one constant value.

In JavaScript and other modern imperative languages I would use closures:

function id(a) {
    return function() {return a;};
}

but Emacs lisp doesn't support those.

I can create mix of identity function and partial function application but it's not supported either.

So how do I do that?

emacs closures elisp
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