Deprecate `i++`, `++i`, `i--`, and `--i`.

Compared to i+=1, i++ only saves one character.

y=i++ and y=++i is really confusing to me.

And Ceylon does not have C style for loop (IMO the only place i++ is suitable in C).

[fwgreen]

Unlike Java, it’s doubtful i++, et al, would be missed if removed from Ceylon. They were dropped from Swift once they removed C style for-loops.

[gavinking]

A quick text search shows that:

• ++ is used 193 times in the language module, and -- is used 32 times.
• ++ is used 293 times in the SDK, and -- is used 254 times.
• ++ is used 72 times in the IDE source, and -- is used 20 times.

So, while I certainly agree that it’s possible to live without these operators, it’s clear that people do use them in Ceylon, and I don’t see them as harmful. I can’t recall a time when I had a bug related to the use of these operators. (It’s true that the postfix form is confusing when you first see it.)

Anyway, if this were pre-Ceylon 1.0, perhaps I might be open to removing these operators, but at this point I don’t see any strong motivation for removing a feature that (1) we use, and (2) doesn’t seem to cause any problems at all.

I’m going to close this issue.