Also: avoidance of mutable state, even locally. A lot of functions can be more straightforwardly expressed using mutable variables and data structures, and most functional languages can handle local mutable state, but a lot of code in functional languages avoids it.
Conversely, a lot of code written in imperative languages would be clearer and/or less bug-prone if it avoided mutable state and used persistent data structures.
I wish there was a mainstream, high performance language that made both styles equally ergonomic.
Conversely, a lot of code written in imperative languages would be clearer and/or less bug-prone if it avoided mutable state and used persistent data structures.
I wish there was a mainstream, high performance language that made both styles equally ergonomic.