Postfix increment is not supported in Swift 3, isn't it?

Question

Here is what I've got after running the code
----------
var a = 3
let b = a++
let c = -b
print (c)
----------
in online sandbox:

ERROR at line 5, col 10: '++' is unavailable: it has been removed in Swift 3
let b = a++
^~
+= 1

Answer 1

Yes. Increment and decrement operators are not supported in Swift 3.

Instead of ++, you need to write += and instead of -- you need to write -=

Answer 2

Strange, because those operators are universal (php, c++, js)