std::stack<T,Container>:: empty

Checks if the underlying container has no elements. Equivalent to: return c . empty ( ) .

Parameters

(none)

Return value

true if the underlying container is empty, false otherwise.

Complexity

Constant.

Example

#include <cassert>
#include <stack>
 
int main()
{
    std::stack<int> stack;
    assert(stack.empty());
 
    stack.push(42);
    assert(!stack.empty());
 
    stack.pop();
    assert(stack.empty());
}

See also