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by hddqsb 1305 days ago
Eh, that's just quibbling over the syntax. The `define` forms could be rewritten as `let` to make things look more "pure".

(The only situation where `define` might be considered "impure" is if it was used to redefine a variable that already existed in the same scope; and even then, it could still be considered "pure" as long as it created a new variable instead of mutating the original variable.)