A protocol must meet the requirements of CopyConstructible
types (C++ Std, 20.1.3), and the requirements of Assignable
types (C++ Std, 23.1).
In the table below, X
denotes
a protocol class, and a
denotes
a value of X
.
Table 20. Protocol requirements
expression |
return type |
assertion/note |
---|---|---|
|
type meeting endpoint requirements |
|
|
|
Returns a value suitable for passing as the domain
argument to POSIX |
|
|
Returns a value suitable for passing as the type
argument to POSIX |
|
|
Returns a value suitable for passing as the protocol
argument to POSIX |