Go's interface is a pointer with a method table

• Go Interface is pointer with method table.
• The word interface confuses people when they think of Java Interfaces.

go

// emptyInterface is the header for an interface{} value.
type emptyInterface struct {
	typ  *rtype
	word unsafe.Pointer
}

// nonEmptyInterface is the header for an interface value with methods.
type nonEmptyInterface struct {
	// see ../runtime/iface.go:/Itab
	itab *struct {
		ityp *rtype // static interface type
		typ  *rtype // dynamic concrete type
		hash uint32 // copy of typ.hash
		_    [4]byte
		fun  [100000]unsafe.Pointer // method table
	}
	word unsafe.Pointer
}

https://github.com/golang/go/blob/7e987b7/src/reflect/value.go#L180-L197

I thought I couldn’t find it in my search tied to the C language, but it was in *.go.

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