Assignment should avoided in functional programming, but in clojure we often use let
.
Is let
just a way of being practical or is assignment not the same as using let
? Should we not avoid assignment in functional programming?
It's fair to say that mutable state is generally against the core concepts of functional programming.
However, let
merely binds a name to a value. If that value is itself immutable, there's no reason for it to be inconsistent with functional programming ideals.