Comment by valyala

I doubt this library is useful. Some of the provided functions such as Clone(), Clear(), Copy() and Equal() are substituted by simple and readable three-line loops. Others are plain harmful. For example, Keys() and Values() may lead to huge memory allocations when working over big maps, while DeleteFunc() worsens code readability and maintainability comparing to a simple 3-line loop. Additionally, it may slow down the resulting code.