The ternary operator can be nice for conciseness and to ensure a variable has been assigned to when the language doesn't check that for you e.g.

    var x = condition ? 1 : 2;

vs

    var x;
    if (condition)
      x = 1 
    else 
      x = 2

I miss being able to write code like this in languages like OCaml:

    let x =
      if (condition) then
        // more lines of code
        1
      else 
        2