front_extended_deque

Description

front_extended_deque allows a deque to be front extended. It shares the same properties as the deque.

Header

See deque

Synopsis

template <typename Deque, typename T>
struct front_extended_deque;

Template parameters

Parameter	Description	Default
`Deque`	Deque type
`T`	Element type

	Note
	`Deque` can be a `deque`, a `front_extended_deque` or a `back_extended_deque`

Model of

Bidirectional Sequence

Notation

D: A front_extended_deque type
e: Heterogeneous value
N: An MPL Integral Constant

Expression Semantics

Semantics of an expression is defined only where it differs from, or is not defined in Bidirectional Sequence.

Expression	Semantics
`D(d, e)`	Extend `d` prepending `e` to its front.
`at<N>(d)`	The Nth element from the beginning of the sequence; see `at`.

	Note
	See `deque` for further details.

Example

typedef deque<int, float> initial_deque;
initial_deque d(12, 5.5f);
front_extended_deque<initial_deque, int> d2(d, 999);
std::cout << at_c<0>(d2) << std::endl;
std::cout << at_c<1>(d2) << std::endl;
std::cout << at_c<2>(d2) << std::endl;