对码当歌,猿生几何?

C++ concepts: CopyAssignable

From cppreference.com
< cpp‎ | concept
 
 
 

Specifies that an instance of the type can be copy-assigned from an lvalue expression.

Requirements

The type T satisfies CopyAssignable if

Given

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 v is unchanged.

See also

checks if a type has a copy assignment operator
(class template)