Difference between revisions of "cpp/named req/CopyAssignable"
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Revision as of 19:15, 14 December 2020
Specifies that an instance of the type can be copy-assigned from an lvalue expression.
Requirements
The type T satisfies CopyAssignable if
- The type
Tsatisfies MoveAssignable, and
Given
-
t, a modifiable lvalue expression of typeT -
v, an lvalue expression of typeTorconst Tor an rvalue expression of typeconst T
The following expressions must be valid and have their specified effects
| Expression | Return type | Return value | Post-conditions |
|---|---|---|---|
| t = v | T&
|
t
|
The value of t is equivalent to the value of v.
The value of |
See also
| (C++11)(C++11)(C++11) |
checks if a type has a copy assignment operator (class template) |
| (C++20) |
specifies that a type is assignable from another type (concept) |
