std::stack<T,Container>::empty - cppreference.com
From cppreference.com
Checks if the underlying container has no elements. Equivalent to: return c.empty().
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
| returns the number of elements (public member function) [edit] | |
| checks whether the container is empty (function template) [edit] |