vector::capacity (STL/CLR)

Reports the size of allocated storage for the container.

    size_type capacity();

Remarks

The member function returns the storage currently allocated to hold the controlled sequence, a value at least as large as vector::size (STL/CLR)(). You use it to determine how much the container can grow before it must reallocate storage for the controlled sequence.

Example

// cliext_vector_capacity.cpp 
// compile with: /clr 
#include <cliext/vector> 
 
int main() 
    { 
    cliext::vector<wchar_t> c1; 
    c1.push_back(L'a'); 
    c1.push_back(L'b'); 
    c1.push_back(L'c'); 
 
// display initial contents " a b c" 
    for (int i = 0; i < c1.size(); ++i) 
        System::Console::Write(" {0}", c1.at(i)); 
    System::Console::WriteLine(); 
 
// increase capacity 
    cliext::vector<wchar_t>::size_type cap = c1.capacity(); 
    System::Console::WriteLine("capacity() = {0}, ok = {1}", 
        cap, c1.size() <= cap); 
    c1.reserve(cap + 5); 
    System::Console::WriteLine("capacity() = {0}, ok = {1}", 
        c1.capacity(), cap + 5 <= c1.capacity()); 
    return (0); 
    } 
 

a b c capacity() = 4, ok = True capacity() = 9, ok = True

Description

Note that the actual capacities may differ from the values shown here, so long as all ok tests report true.

Requirements

Header: <cliext/vector>

Namespace: cliext

See Also

Reference

vector (STL/CLR)

vector::reserve (STL/CLR)