Yes and no. The syntax x -> f(x) is borrowed from functional programming, which borrows it from λ-calculus. In λ-calculus, λx. f(x) is the function which maps x to f(x). So, λ -> f(λ) makes me cringe hard, because λ is a keyword! It's like trying to write in Python:

    def def(x):
        pass

Weird, uh?