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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

deque::empty (STL/CLR)

Tests whether no elements are present.

    bool empty();

The member function returns true for an empty controlled sequence. It is equivalent to deque::size (STL/CLR)() == 0. You use it to test whether the deque is empty.

// cliext_deque_empty.cpp 
// compile with: /clr 
#include <cliext/deque> 
 
int main() 
    { 
    cliext::deque<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}", c1.size()); 
    System::Console::WriteLine("empty() = {0}", c1.empty()); 
 
// clear the container and reinspect 
    c1.clear(); 
    System::Console::WriteLine("size() = {0}", c1.size()); 
    System::Console::WriteLine("empty() = {0}", c1.empty()); 
    return (0); 
    } 
 
a b c size() = 3 empty() = False size() = 0 empty() = True

Header: <cliext/deque>

Namespace: cliext

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