func (val_ *Value) IsNumber() bool { return val_.hasJsType(isNumber, func(self unsafe.Pointer) bool { return C.V8_Value_IsNumber(self) == 1 }) }
func (v *Value) IsNumber() bool { return v.checkJsType(isNumber, func(self unsafe.Pointer) bool { return C.V8_Value_IsNumber(self) == 1 }) }