Return true if the value of the specified lhs stack is lexicographically less than or equal to that of the specified rhs stack, and false otherwise. The value of stack lhs is lexicographically less than or equal to that of stack rhs if rhs is not lexicographically less than lhs (see operator<). This method requires that operator<, inducing a total order, be defined for value_type. Note that this operator returns !(rhs < lhs).
Declared in <bslstl_stack.h>
template<
class VALUE,
class CONTAINER>
bool
operator<=(
stack<VALUE, CONTAINER> const& lhs,
stack<VALUE, CONTAINER> const& rhs);