aged_container_utility.h

#pragma once
 
#include <xrpl/beast/container/aged_container.h>
 
#include <chrono>
#include <type_traits>
 
namespace beast {
 
template <class AgedContainer, class Rep, class Period>
typename std::enable_if<is_aged_container<AgedContainer>::value, std::size_t>::type
expire(AgedContainer& c, std::chrono::duration<Rep, Period> const& age)
{
    std::size_t n(0);
    auto const expired(c.clock().now() - age);
    for (auto iter(c.chronological.cbegin()); iter != c.chronological.cend() && iter.when() <= expired;)
    {
        iter = c.erase(iter);
        ++n;
    }
    return n;
}
 
}  // namespace beast