= tests for equality between objects, returning either true or false.
Note unlike Qi II, = will work on all vectors generally; let V1 and V2 be vectors then
V1 = V2 iff ∀ i (<-address V1 i) = (<-address V2 i).
comparison of closures or streams will return false under =. Lists, atoms,
tuples and vectors are the proper range of this function. Kλ is case sensitive,
(= a A) returns false.