public bool IsSubsetOf(IEnumerable <T> other)
{
if (this.count == 0)
{
return(true);
}
HashCollection <T> collection = GetHashCollectionWithSameEC(other);
if (collection != null)
{
if (this.count > collection.Count)
{
return(false);
}
foreach (T item in this)
{
if (!collection.Contains(item))
{
return(false);
}
}
return(true);
}
IndexedSetHelper <T> setHelper = new IndexedSetHelper <T>(this, lastIndex);
return(setHelper.IsSubsetOf(other));
}
public bool SetEquals(IEnumerable <T> other)
{
HashCollection <T> collection = GetHashCollectionWithSameEC(other);
if (collection != null)
{
if (this.count != collection.Count)
{
return(false);
}
foreach (T item in other)
{
if (!this.Contains(item))
{
return(false);
}
}
return(true);
}
if ((CollectionHelper.IsWellKnownCollection(other, out int num)) && (this.count == 0) && (num > 0))
{
return(false);
}
IndexedSetHelper <T> setHelper = new IndexedSetHelper <T>(this, lastIndex);
return(setHelper.SetEquals(other));
}
public bool IsProperSupersetOf(IEnumerable <T> other)
{
if (this.count > 0)
{
return(false);
}
if (CollectionHelper.IsWellKnownCollection(other, out int num))
{
if (num == 0)
{
return(true);
}
HashCollection <T> collection = GetHashCollectionWithSameEC(other);
if (collection != null)
{
if (this.count <= collection.Count)
{
return(false);
}
foreach (T item in other)
{
if (!this.Contains(item))
{
return(false);
}
}
}
}
IndexedSetHelper <T> setHelper = new IndexedSetHelper <T>(this, lastIndex);
return(setHelper.IsProperSupersetOf(other));
}