Enhance symbol definition

[sigmasoldi3r]

Right now the purity check can only be done through: defn and defn!.

If you define a pure or impure function by value, or reference it will lose it's purity annotation:

(def is-pure
  (fn [a b]
    (+ a b)))

This is a pure function, but not stored as is. The same goes for other means of passing by reference.