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Expression semantics

Name Expression Precondition Semantics Postcondition
Default constructor X x; X() x may be singular
Copy constructor X(x) x is nonsingular *X(x) = t is equivalent to *x = t [2]
Copy constructor X x(y); or X x = y; y is nonsingular *y = t is equivalent to *x = t [2]
Dereference assignment *x = t x is dereferenceable. If there has been a previous assignment through x, then there has been an intervening increment. [3]
Preincrement ++x x is dereferenceable. x has previously been assigned through. If x has previously been incremented, then there has been an intervening assignment through x [3] [4] x points to the next location into which a value may be stored
Postincrement (void) x++ x is dereferenceable. x has previously been assigned through. Equivalent to (void) ++x x points to the next location into which a value may be stored
Postincrement and assign *x++ = t; x is dereferenceable. If there has been a previous assignment through x, then there has been an intervening increment. [3] [4] Equivalent to {*x = t; ++x; } x points to the next location into which a value may be stored


Valid expressions | Standard Template Library Programmer`s Guide | Complexity guarantees







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