Hello! This code is not compiling: ```var b : Byte = 10.toByte() b += 10.toByte()``` Complains about...

# compiler

[PHondogo]

Hello! This code is not compiling:

var b : Byte = 10.toByte()
b += 10.toByte()

Complains about type mismatch: Required Byte got Int.
Why?

[ephemient]

operator fun Byte.plus(other: Byte): Int

[elizarov]

Bytes are designed for storage, so that you can have a lot of bytes in memory. They are not designed for doing arithmetics (that’s what Int and Long are for). So, do you arithmetics in Ints, then coerce and store to bytes if needed.

[PHondogo]

Thanks!