std::experimental::ranges::exchange
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< cpp | experimental | ranges
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exchange
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Defined in header
<experimental/ranges/utility>
template< MoveConstructible T, class U = T >
(ranges TS)
requires Assignable<T&, U>
Replaces the value of obj with new_value and returns the old value of obj, as if by
T old_value = std::move(obj); obj = std::forward <U>(new_value); return old_value;
[edit] Parameters
obj
-
object whose value to replace
new_value
-
the value to assign to
obj
[edit] Return value
The old value of obj.
[edit] Exceptions
noexcept specification:
noexcept(std::is_nothrow_move_constructible <T>::value &&
std::is_nothrow_assignable <T&, U>::value)
std::is_nothrow_assignable <T&, U>::value)
[edit] Example
This section is incomplete
Reason: no example
Reason: no example