/// <summary>
/// Returns a hash code for an object.
/// </summary>
/// <param name="obj">An object of type ComparableTuple2</param>
/// <returns>A hash code for the object.</returns>
public int GetHashCode(ComparableTuple2 <TItem0, TItem1> group)
{
int hash0 = group.Item0.GetHashCode();
int hash1 = group.Item1.GetHashCode();
int hash = 577 * hash0 + 599 * hash1;
return(hash.GetHashCode());
}
/// <summary>
/// Method to copy the data in this Sparse2DMatrix instance to another instance.
/// </summary>
/// <param name="sparse2DMatrix">An instance of the Sparse2DMatrix class.</param>
public void CopyTo(Sparse2DMatrix <TKey0, TKey1, TValue> sparse2DMatrix)
{
sparse2DMatrix.m_dictionary.Clear();
// Copy each key value pair to the dictionary.
foreach (KeyValuePair <ComparableTuple2 <TKey0, TKey1>, TValue> pair in m_dictionary)
{
ComparableTuple2 <TKey0, TKey1> newCombinedKey = new ComparableTuple2 <TKey0, TKey1>(pair.Key);
sparse2DMatrix.m_dictionary.Add(newCombinedKey, pair.Value);
}
}
/// <summary>
/// Method to copy the data in another Sparse2DMatrix instance to this instance.
/// </summary>
/// <param name="sparse2DMatrix">An instance of the Sparse2DMatrix class.</param>
private void Initialize(Sparse2DMatrix <TKey0, TKey1, TValue> sparse2DMatrix)
{
m_dictionary.Clear();
// Copy each key value pair to the dictionary.
foreach (KeyValuePair <ComparableTuple2 <TKey0, TKey1>, TValue> pair in sparse2DMatrix)
{
ComparableTuple2 <TKey0, TKey1> newCombinedKey = new ComparableTuple2 <TKey0, TKey1>(pair.Key);
m_dictionary.Add(newCombinedKey, pair.Value);
}
}
/// <summary>
/// This methods implements the IComparable<ComparableTuple2<TItem0, TItem1>> interface.
/// </summary>
/// <param name="group">The group being compared to this group</param>
/// <returns>
/// The value -1 if this groups is less than the passed group.
/// The value 1 if this group is greater than the passed group.
/// The value 0 if this group and the passed groups are equal.
/// </returns>
public int CompareTo(ComparableTuple2 <TItem0, TItem1> group)
{
int result = this.Item0.CompareTo(group.Item0);
if (result == 0)
{
result = this.Item1.CompareTo(group.Item1);
}
return(result);
}
/// <summary>
/// This method must be overridden by the caller to separate a combined key into the two original keys.
/// </summary>
/// <param name="combinedKey">A value that combines the keys in a unique fashion</param>
/// <param name="key0">A reference to the first key</param>
/// <param name="key1">A reference to the second key</param>
public void SeparateCombinedKeys(ComparableTuple2 <TKey0, TKey1> combinedKey, ref TKey0 key0, ref TKey1 key1)
{
key0 = combinedKey.Item0;
key1 = combinedKey.Item1;
}
/// <summary>
/// Constructs a new instance with the same item values as this instance.
/// </summary>
/// <param name="group2"></param>
public ComparableTuple2(ComparableTuple2 <TItem0, TItem1> group)
{
Item0 = group.Item0;
Item1 = group.Item1;
}
/// IEqualityComparer.Equals compares the items in this group for equality.
public bool Equals(ComparableTuple2 <TItem0, TItem1> groupA,
ComparableTuple2 <TItem0, TItem1> groupB)
{
return((groupA.Item0.Equals(groupB.Item0)) &&
(groupA.Item1.Equals(groupB.Item1)));
}