Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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C++ Boost

Buffer Concept

A Buffer is something in which items can be put and removed. The Buffer concept has very few requirements. It does not require any particular ordering of how the items are stored or in what order they will appear when removed, however, there is typically some sort of ordering policy.

Notation

B is a type that models Buffer.
T is the value type of B.
t is an object of type T.

Members

For a type to model the Buffer concept it must have the following members.

Member Description
value_type The type of object stored in the Buffer. The value type must be Assignable.
size_type An unsigned integral type for representing the number of objects in the Buffer.
void push(const T& t) Inserts t into the Buffer. size() will be incremented by one.
void pop() Removes an object from the Buffer. size() will be decremented by one. Precondition: empty() is false.
T& top() Returns a mutable reference to some object in the Buffer. Precondition: empty() is false.
const T& top() const Returns a const reference to some object in the Buffer. Precondition: empty() is false.
void size() const Returns the number of objects in the Buffer. Invariant: size() >= 0.
bool empty() const Equivalent to b.size() == 0.

Complexity Guarantees

Models



Copyright © 2000-2001 Jeremy Siek, Indiana University and C++ Library & Compiler Group/SGI (jsiek@engr.sgi.com)