I&#x27;m not sure \ is better than &quot;fun&quot;, fun does have a certain clarity when reading code, and it&#x27;s only three extra keystrokes if you include the space, all easier to type than backslash which needs a pinky stretch.  Honestly I could go either way though.<p>Also note that C# loses brevity as soon as there are more args than one (such as with commonly used Seq.iteri or folds) because of having to type the &quot;(,)&quot; for C# (the parens annoyingly requiring shift keys) instead of just a space.