int System.Collections.IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
return(FdbTuple.CombineHashCodes(
comparer.GetHashCode(this.Item1),
comparer.GetHashCode(this.Item2)
));
}
int IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
return(HashCodes.Combine(
m_prefix.GetHashCode(),
comparer.GetHashCode(m_items)
));
}
int IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
return(FdbTuple.CombineHashCodes(
this.Head != null ? this.Head.GetHashCode(comparer) : 0,
comparer.GetHashCode(this.Tail)
));
}
public override int GetHashCode(System.Collections.IEqualityComparer comparer)
{
int hash = 17;
hash = hash * 31 + comparer.GetHashCode(this.head);
hash = hash * 31 + this.tail.GetHashCode(comparer);
return(hash);
}
int System.Collections.IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
int h = this.Head.GetHashCode(comparer);
// we can't combine with the hashcode of the tail because Combine(H(head), H(tail)) != Combine(H(this[0]), H(this[1]), ... H(this[N-1]))
foreach (var item in this.Tail)
{
h = HashCodes.Combine(h, comparer.GetHashCode(item));
}
return(h);
}
int IStructuralEquatable.GetHashCode(System.Collections.IEqualityComparer comparer)
{
// the cached hashcode is only valid for the default comparer!
bool canUseCache = object.ReferenceEquals(comparer, SimilarValueComparer.Default);
if (m_hashCode.HasValue && canUseCache)
{
return(m_hashCode.Value);
}
int h = 0;
for (int i = 0; i < m_count; i++)
{
var item = m_items[i + m_offset];
h = HashCodes.Combine(h, comparer.GetHashCode(item));
}
if (canUseCache)
{
m_hashCode = h;
}
return(h);
}
public override int GetHashCode(System.Collections.IEqualityComparer comparer)
{
return(comparer.GetHashCode(this.value));
}