is not int++

Why does
var y = 5

Act more like
var y = 5

than y++ ?

The operator inc maps to ++ so I would assume the behavior on int would be same…why is it different?

Internally, y++ is turned into something more like:

y =

One of the reasons to do it this way is so that the increment operator can work on immutable types (Int is an example of just such a type).

You can read more about how the ++ and -- operators are overloaded here

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