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Why loops specifically? Why not conditionals? A lot of code needs to assemble a result set based on if/then or switch statements. Maybe you could add those in
by noduerme 1y ago
Why loops specifically? Why not conditionals?
A lot of code needs to assemble a result set based on if/then or switch statements. Maybe you could add those in each step of a chain of inline functions, but what if you need to skip some of that logic in certain cases? It's often much more readable to start off with a null result and put your (relatively functional) code inside if/then blocks to clearly show different logic for different cases.
- turtletontine 1y agoThere’s no mutating happening here, for example: if cond: X = “yes” else: X = “no” X is only ever assigned once, it’s actually still purely functional. And in Rust or Lisp or other expression languages, you can do stuff like this: let X = if cond { “yes” } else { “no” }; That’s a lot nicer than a trinary operator!
- nielsbot 1y agoSwift does let you declare an immutable variable without assigning a value to it immediately. As long as you assign a value to that variable once and only once on every code path before the variable is read: let x: Int if cond { x = 1 } else { x = 2 } // read x here
- lock1 1y agoIMO, both ternary operator form & Rust/Haskell/Zig syntax works pretty well. Both if expression syntax can be easily composed and read left-to-right, unlike Python's `<true-branch> if <cond> else <false-branch>`.