/// <summary>
/// Modifies the current set so that it contains all elements that are present in both the current set and in the specified collection.
/// </summary>
/// <param name="other">The collection to compare to the current set.</param>
public void UnionWith(IEnumerable <T> other)
{
var result = ImmutableHashSet <T> .Union(other, this.Origin);
this.Apply(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="DebuggerProxy"/> class.
/// </summary>
/// <param name="set">The collection to display in the debugger</param>
public DebuggerProxy(ImmutableHashSet <T> set)
{
Requires.NotNull(set, "set");
this.set = set;
}
/// <summary>
/// Determines whether the current set overlaps with the specified collection.
/// </summary>
/// <param name="other">The collection to compare to the current set.</param>
/// <returns>true if the current set and other share at least one common element; otherwise, false.</returns>
public bool Overlaps(IEnumerable <T> other)
{
return(ImmutableHashSet <T> .Overlaps(other, this.Origin));
}
/// <summary>
/// Modifies the current set so that it contains only elements that are present either in the current set or in the specified collection, but not both.
/// </summary>
/// <param name="other">The collection to compare to the current set.</param>
public void SymmetricExceptWith(IEnumerable <T> other)
{
var result = ImmutableHashSet <T> .SymmetricExcept(other, this.Origin);
this.Apply(result);
}
/// <summary>
/// Modifies the current set so that it contains only elements that are also in a specified collection.
/// </summary>
/// <param name="other">The collection to compare to the current set.</param>
public void IntersectWith(IEnumerable <T> other)
{
var result = ImmutableHashSet <T> .Intersect(other, this.Origin);
this.Apply(result);
}
/// <summary>
/// Determines whether the current set is a superset of a specified collection.
/// </summary>
/// <param name="other">The collection to compare to the current set.</param>
/// <returns>true if the current set is a superset of other; otherwise, false.</returns>
public bool IsSupersetOf(IEnumerable <T> other)
{
return(ImmutableHashSet <T> .IsSupersetOf(other, this.Origin));
}
/// <summary>
/// Removes all elements in the specified collection from the current set.
/// </summary>
/// <param name="other">The collection of items to remove from the set.</param>
public void ExceptWith(IEnumerable <T> other)
{
var result = ImmutableHashSet <T> .Except(other, _equalityComparer, _root);
this.Apply(result);
}
/// <summary>
/// Determines whether the <see cref="T:System.Collections.Generic.ICollection`1"/> contains a specific value.
/// </summary>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.ICollection`1"/>.</param>
/// <returns>
/// true if <paramref name="item"/> is found in the <see cref="T:System.Collections.Generic.ICollection`1"/>; otherwise, false.
/// </returns>
public bool Contains(T item)
{
return(ImmutableHashSet <T> .Contains(item, this.Origin));
}
/// <summary>
/// Initializes a new instance of the <see cref="ImmutableHashSetDebuggerProxy{T}"/> class.
/// </summary>
/// <param name="set">The collection to display in the debugger</param>
public ImmutableHashSetDebuggerProxy(ImmutableHashSet <T> set)
{
Requires.NotNull(set, nameof(set));
_set = set;
}
public static ImmutableHashSet <T> AddRange <T>(this ImmutableHashSet <T> set1, ImmutableHashSet <T> set2)
{
using var builder = PooledHashSet <T> .GetInstance();
foreach (var item in set1)
{
builder.Add(item);
}
foreach (var item in set2)
{
builder.Add(item);
}
if (builder.Count == set1.Count)
{
return(set1);
}
if (builder.Count == set2.Count)
{
return(set2);
}
return(builder.ToImmutable());
}
public static ImmutableHashSet <T> IntersectSet <T>(this ImmutableHashSet <T> set1, ImmutableHashSet <T> set2)
{
if (set1.IsEmpty || set2.IsEmpty)
{
return(ImmutableHashSet <T> .Empty);
}
else if (set1.Count == 1)
{
return(set2.Contains(set1.First()) ? set1 : ImmutableHashSet <T> .Empty);
}
else if (set2.Count == 1)
{
return(set1.Contains(set2.First()) ? set2 : ImmutableHashSet <T> .Empty);
}
using var builder = PooledHashSet <T> .GetInstance();
foreach (var item in set1)
{
if (set2.Contains(item))
{
builder.Add(item);
}
}
if (builder.Count == set1.Count)
{
return(set1);
}
else if (builder.Count == set2.Count)
{
return(set2);
}
return(builder.ToImmutable());
}