...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
A completion condition is a function object that is
used with the algorithms read
, async_read
, write
, and async_write
to determine when the
algorithm has completed transferring data.
A type X
meets the CompletionCondition
requirements if it
satisfies the requirements of Destructible
(C++Std [destructible]) and MoveConstructible
(C++Std [moveconstructible]), as well as the additional requirements listed
below.
In the table below, x
denotes
a value of type X
, ec
denotes a (possibly const) value of
type error_code
, and n
denotes a (possibly const) value of type
size_t
.
Table 9. CompletionCondition requirements
expression |
return type |
assertion/note |
---|---|---|
|
|
Let |