Survey: what new bit of syntax would you like in base #RStats?

What should the following bits of syntax do?

* ===
* ++ And --
* +=
* //
* ?
* {{ }}
* [[[ ]]]
* <<==
* (?: X)

#RStats syntax hypothetical

x <- h > 3 ? 1 : 2

Steal C's ternary operator for R

@coolbutuseless FWIW ? is already an infix operator, as in package?ggplot2. And @jimhester abused it for type annotation in https://github.com/jimhester/typeCheck.
GitHub - jimhester/typeCheck: The typeCheck package automatically adds type checking code when types are annotated.

The typeCheck package automatically adds type checking code when types are annotated. - jimhester/typeCheck

GitHub

@hadleywickham @coolbutuseless @jimhester Triple it for some added personality! `???` turns a boring conditional statement into one oozing with incredulity

x <- h > 3 ??? 1 : 2