list::size (STL/CLR)

計數項目的數目。

    size_type size();

備註

成員函式傳回受控制序列的長度。 您可用它來決定受控制序列中目前的項目數目。 如果您只想知道序列的大小是否非零，請參閱 list::empty (STL/CLR)()。

範例

// cliext_list_size.cpp 
// compile with: /clr 
#include <cliext/list> 
 
int main() 
    { 
    cliext::list<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 each (wchar_t elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    System::Console::WriteLine("size() = {0} starting with 3", c1.size()); 
 
// clear the container and reinspect 
    c1.clear(); 
    System::Console::WriteLine("size() = {0} after clearing", c1.size()); 
 
// add elements and clear again 
    c1.push_back(L'a'); 
    c1.push_back(L'b'); 
    System::Console::WriteLine("size() = {0} after adding 2", c1.size()); 
    return (0); 
    } 
 

需求

標頭 ： <cliext/list>

命名空間： cliext

請參閱

參考

list (STL/CLR)

list::empty (STL/CLR)