5 ms·

short of having a language mechanism for doing an 'uninitialized' let, conditional operators could work: let x : Something = condition ? foo() : bar() but yea

• jafingi 12y ago
  Let's hope you don't have a baz.
  • bigdubs 12y ago
    you can torture the logic further: let x : Something = outer_conditional ? baz() : conditional ? foo() : bar()
    • mikeash 12y ago
      I think this can look pretty nice, properly formatted: let x = conditional1 ? bar() : conditional2 ? baz() : conditional3 ? quux() : someDefault
• LinaLauneBaer 12y ago
  often times you want to do more stuff in either case so ? does not always work. The if-else approach is more general.
  • matt_kantor 12y ago
    You could also do this: let x: Something = { if condition { someSideEffect() return foo() } else { anotherSideEffect() return bar() } }() But it's kind of ugly.
    • masklinn 12y ago
      Sad that Swift doesn't use an expressive if, then you could just write: let x: Something = if condition { // do stuff foo() } else { // do other stuff bar() }
      • 0942v8653 12y ago
        That's something I really miss in other languages—the ternary operator is just not good enough for when you have a condition like this. In lisp it's 3 lines which is just the right amount when in other languages you have 6 lines (and until now unnecessary mutability) or only one.
• mikeash 12y ago
  Note that it's no longer "would," this is a feature included in this beta. OP's code is now legal.