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C++ concepts: CopyAssignable

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Revision as of 14:25, 2 November 2012 by P12bot (Talk | contribs)

 
 
 

Specifies that an instance of the type can be copy-assigned (copied).

This concept implies MoveAssignable.

Requirements

The type must implement the following functions:

Type::operator=

Type& Type::operator=( Type& other );

Type& Type::operator=( const Type& other );
Type& Type::operator=( volatile Type& other );

Type& Type::operator=( const volatile Type& other );
(One of the variants is sufficient)

Copy assignment operator: assigns the contents of other. The internal state of other must not be modified.

The following expressions must have the specified effects:

Expression Effects
a = v; a is equivalent to v, where a is an instance of Type and v is an instance of Type. v must be unchanged.

See also

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