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I benefit from functional programming without sum types in Elixir. You also failed to mention immutability. Immutability permits trivial concurrency without re

• netbioserror 2y ago
  Referentially transparent functions naturally have immutable inputs and outputs, so that's implicit. But it's often useful to be able to write mutation-based algorithms within a function, so in that context I'm less concerned, so long as the size and scope of the function is constrained.
  • pmarreck 2y ago
    > But it's often useful to be able to write mutation-based algorithms within a function I know. Quicksort comes to mind. But you then lose a guarantee. Might not make a difference practically, though (which presumably is what Rust's design banks on).