OniSplit/Collections/Set.cs

using System;
using System.Collections.Generic;

namespace Oni.Collections
{
    internal class Set<T> : IEnumerable<T>
    {
        private readonly Dictionary<T, int> set;

        public Set()
        {
            set = new Dictionary<T, int>();
        }

        public Set(IEqualityComparer<T> comparer)
        {
            set = new Dictionary<T, int>(comparer);
        }

        public bool Add(T t)
        {
            if (set.ContainsKey(t))
                return false;

            set.Add(t, 0);
            return true;
        }

        public bool Contains(T t) => set.ContainsKey(t);

        public int Count => set.Count;

        public void UnionWith(IEnumerable<T> with)
        {
            foreach (T t in with)
                set[t] = 0;
        }

        public IEnumerator<T> GetEnumerator()
        {
            foreach (var pair in set)
                yield return pair.Key;
        }

        System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => GetEnumerator();
    }
}
Revision:	1114
Committed:	Wed Jan 22 14:08:57 2020 UTC (5 years, 8 months ago) by iritscen
File size:	1094 byte(s)
Log Message:	Adding OniSplit source code (v0.9.99.0). Many thanks to Neo for all his work over the years.
#	Content
1	using System;
2	using System.Collections.Generic;
3
4	namespace Oni.Collections
5	{
6	internal class Set<T> : IEnumerable<T>
7	{
8	private readonly Dictionary<T, int> set;
9
10	public Set()
11	{
12	set = new Dictionary<T, int>();
13	}
14
15	public Set(IEqualityComparer<T> comparer)
16	{
17	set = new Dictionary<T, int>(comparer);
18	}
19
20	public bool Add(T t)
21	{
22	if (set.ContainsKey(t))
23	return false;
24
25	set.Add(t, 0);
26	return true;
27	}
28
29	public bool Contains(T t) => set.ContainsKey(t);
30
31	public int Count => set.Count;
32
33	public void UnionWith(IEnumerable<T> with)
34	{
35	foreach (T t in with)
36	set[t] = 0;
37	}
38
39	public IEnumerator<T> GetEnumerator()
40	{
41	foreach (var pair in set)
42	yield return pair.Key;
43	}
44
45	System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => GetEnumerator();
46	}
47	}