Golang Byte and Rune

Cat $GOROOT/src/builtin/builtin.go

Package builtin

Type byte byte

Byte is a alias for uint8 and are equivalent to uint8 in all ways. It is//used, by convention, to distinguish byte values from 8-bit unsigned//integer values.

Really:type byte = uint8 (see golang.org/issue/21601)

Type Rune Rune

Rune is a alias for int32 and was equivalent to int32 in all ways.

It is used, by convention, to distinguish character values from integer values.

Really:type Rune = int32 (see golang.org/issue/21601)