rvalue造句

• To get an rvalue, the function template std : : move ( ) should be used.
• Mojo is closely related of teh creation of rvalue references in the new C + + standard.
• A named variable will never be considered to be an rvalue even if it is declared as such.
• Rvalue references can provide performance benefits to existing code without needing to make any changes outside the standard library.
• Rvalue references can also be modified only under certain circumstances, being intended to be used primarily with move constructors.
• The std : : forward ( params ) syntax is the syntax that perfectly forwards arguments as their proper types, even with regard to rvalue-ness, to the constructor.
• Due to the nature of the wording of rvalue references, and to some modification to the wording for lvalue references ( regular references ), rvalue references allow developers to provide perfect function forwarding.
• Due to the nature of the wording of rvalue references, and to some modification to the wording for lvalue references ( regular references ), rvalue references allow developers to provide perfect function forwarding.
• The parameter of a move assignment operator is an rvalue reference ( T & & ) to type " T ", where " T " is the object that defines the move assignment operator.
• While the original proposal specified that an rvalue of type nullptr _ t should not be convertible to bool, the core language working group decided that such a conversion would be desirable, for consistency with regular pointer types.
• :As for your first question, it's true that + + i yields an rvalue ( which is just a value ) and not an lvalue ( which is a modifiable variable-like thing ) in C . But that's not really relevant here.
• If a std : : vector < T > temporary is created or returned from a function, it can be stored only by creating a new std : : vector < T > and copying all the rvalue's data into it.
• Such a compiled expression may be used as a VALUE, i . e . the right side of an assignment ( rvalue ), but more interestingly, such a compiled expression may be used to resolve the left side ( lvalue ) of an assignment, i . e . PRIVATE, or PUBLIC variables, or a database FIELD.
• In C + + 11, a [ [ b : More C + + Idioms / Move Constructor | ] ] of std : : vector < T > that takes an rvalue reference to a std : : vector < T > can copy the pointer to the internal C-style array out of the rvalue into the new std : : vector < T >, then set the pointer inside the rvalue to null.
• In C + + 11, a [ [ b : More C + + Idioms / Move Constructor | ] ] of std : : vector < T > that takes an rvalue reference to a std : : vector < T > can copy the pointer to the internal C-style array out of the rvalue into the new std : : vector < T >, then set the pointer inside the rvalue to null.
• In C + + 11, a [ [ b : More C + + Idioms / Move Constructor | ] ] of std : : vector < T > that takes an rvalue reference to a std : : vector < T > can copy the pointer to the internal C-style array out of the rvalue into the new std : : vector < T >, then set the pointer inside the rvalue to null.