X

A type that is model of Storage

T

The value_type of X

t

An object of type T

n

object of type convertible to X::size_type

Size constructor

X(n)

T is DefaultConstructible

X

Fill constructor

X(n,t)

X

Range constructor

X(i, j)

i and j are Input Iterators whose value type is convertible to T

X

Resize

a.resize(n, t)

a is mutable

void

Resize

a.resize(n)

a is mutable

void

Default-constructor

X()

Creates 0 elements

size()==0

Size-constructor

X(n)

n>=0

Creates n elements. Elements are constructed without an initializer. That is if T is a (possibly cv-qualified) non-POD class type (or array thereof), the object is default initialized. Otherwise, the object created has indeterminate value. See the sentance "If new initializer is omitted" in section 5.3.4 paragraph 15 of the ISO C++ standard.

size()==n

Fill-constructor

X(n,t)

n>=0

Creates n initialised element with copies of t

size()==n

Range constructor

X(i, j)

[i,j) is a valid range.

copies the range [i,j) to the storage

size() is equal to the distance from i to j. Each element is a copy of the corresponding element in the range [i,j).

Resize

a.resize(n, t)

n ⇐ a.max_size()

Modified the container so that it has exactly n elements. + The container may be reallocated if its size changes. Existing element values are preserved, additional elements are copies of t.

a.size() == n

Resize

a.resize(n)

n ⇐ a.max_size()

Modified the container so that it has exactly n elements. + The container may be reallocated if its size changes. Element values are uninitialised. That is, each element value may be a previously assigned value or default construced value for T.

a.size() == n