public void InsertionAfterClear()
{
var dict = new FastDictionary <int, int>(200);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
dict.Clear();
Assert.Equal(0, dict.Count);
Assert.Equal(256, dict.Capacity);
for (int i = 0; i < 100; i += 10)
{
dict[i] = i;
}
for (int i = 0; i < 100; i++)
{
if (i % 10 == 0)
{
Assert.True(dict.Contains(i));
}
else
{
Assert.False(dict.Contains(i));
}
}
}
private static long BenchmarkFastDictionaryStringOut(string[] tuples, int tries)
{
int y = 0;
var fast = Stopwatch.StartNew();
var fastDict = new FastDictionary <int, string>(tuples.Length * 2);
for (int i = 0; i < tries; i++)
{
for (int j = 0; j < tuples.Length; j++)
{
fastDict[j] = tuples[j];
}
string k;
for (int j = 0; j < tuples.Length; j++)
{
fastDict.TryGetValue(j, out k);
//k = fastDict[j];
if (k != null)
{
y++;
}
}
//fastDict.Clear();
}
fast.Stop();
return(fast.ElapsedMilliseconds);
}
public void EnumeratorsWithJumps()
{
var dict = new FastDictionary <int, int>(16);
dict[1] = 1;
dict[2] = 2;
dict[15] = 15;
int count = 0;
foreach (var item in dict.Keys)
{
count++;
}
Assert.Equal(3, count);
count = 0;
foreach (var item in dict.Values)
{
count++;
}
Assert.Equal(3, count);
count = 0;
foreach (var item in dict)
{
count++;
}
Assert.Equal(3, count);
}
public void ConstructionWithFastDictionaryAndDifferentComparer()
{
var equalityComparer = new CustomIntEqualityComparer();
var dict = new FastDictionary <int, int>(200, equalityComparer);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
var fromFastDictionary = new FastDictionary <int, int>(dict, EqualityComparer <int> .Default);
Assert.Equal(dict.Count, fromFastDictionary.Count);
Assert.Equal(dict.Capacity, fromFastDictionary.Capacity);
Assert.NotSame(dict.Comparer, fromFastDictionary.Comparer);
int count = 0;
foreach (var item in fromFastDictionary)
{
Assert.Equal(item.Key, item.Value);
count++;
}
Assert.Equal(100, count);
}
private static long BenchmarkFastDictionaryString(string[] tuples, int tries)
{
var fast = Stopwatch.StartNew();
var fastDict = new FastDictionary <string, int>(tuples.Length * 2);
for (int i = 0; i < tries; i++)
{
for (int j = 0; j < tuples.Length; j++)
{
fastDict[tuples[j]] = j;
}
int k;
for (int j = 0; j < tuples.Length; j++)
{
fastDict.TryGetValue(tuples[j], out k);
// k = fastDict[tuples[j]];
k++;
}
//fastDict.Clear();
}
fast.Stop();
return(fast.ElapsedMilliseconds);
}
public void ConsecutiveInsertionsWithoutGrow()
{
var dict = new FastDictionary <int, int>(200);
for (int i = 0; i < 100; i++)
{
dict.Add(i, i);
}
for (int i = 0; i < 100; i++)
{
Assert.True(dict.Contains(i));
Assert.Equal(i, dict[i]);
}
int count = 0;
foreach (var item in dict)
{
Assert.Equal(item.Key, item.Value);
count++;
}
Assert.Equal(100, count);
Assert.Equal(100, dict.Count);
Assert.Equal(256, dict.Capacity);
}
public void ConsecutiveInsertsWithShrink()
{
var dict = new FastDictionary <int, int>();
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
dict.Clear();
for (int i = 0; i < 33; i++)
{
dict[i] = i;
}
dict.Remove(32);
int value;
Assert.True(dict.TryGetValue(0, out value));
Assert.Equal(32, dict.Count);
Assert.True(dict.Capacity > 32);
}
public void ConsecutiveRemovesWithGrow()
{
var dict = new FastDictionary <int, int>(4);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
for (int i = 0; i < 100; i += 2)
{
Assert.True(dict.Remove(i));
}
for (int i = 0; i < 100; i++)
{
if (i % 2 == 0)
{
Assert.False(dict.Contains(i));
}
else
{
Assert.True(dict.Contains(i));
}
}
Assert.Equal(50, dict.Count);
Assert.Equal(256, dict.Capacity);
}
public void ConstructionWithNonPowerOf2()
{
var dict = new FastDictionary <int, int>(5);
Assert.Equal(0, dict.Count);
Assert.Equal(8, dict.Capacity);
Assert.NotNull(dict.Comparer);
}
public void Duplicates()
{
var dict = new FastDictionary <int, int>(16);
dict[1] = 1;
dict[1] = 2;
Assert.Equal(2, dict[1]);
Assert.Throws <ArgumentException>(() => dict.Add(1, 3));
}
public void AddWithHashCollision()
{
var dict = new FastDictionary <string, int>(new CollidingStringEqualityComparer());
dict.Add("a", 1);
dict.Add("b", 1);
dict.Remove("a");
Assert.Throws <ArgumentException>(() => dict.Add("b", 1));
}
public void UpdateWithHashCollision()
{
var dict = new FastDictionary <string, int>(new CollidingStringEqualityComparer());
dict["a"] = 1;
dict["b"] = 1;
dict.Remove("a");
dict["b"] = 1;
Assert.Equal(1, dict.Count);
}
public void ConstructionWithExplicitZeroAndNegative()
{
var dict = new FastDictionary <int, int>(0);
Assert.Equal(0, dict.Count);
Assert.Equal(4, dict.Capacity);
Assert.NotNull(dict.Comparer);
dict = new FastDictionary <int, int>(-1);
Assert.Equal(0, dict.Count);
Assert.Equal(4, dict.Capacity);
Assert.NotNull(dict.Comparer);
}
public void AddAndRemoveWithoutGrowth()
{
var dict = new FastDictionary <long, int>(8);
for (int i = 0; i < 100; i++)
{
dict.Add(i, i);
dict.Remove(i);
int dummy;
Assert.False(dict.TryGetValue(i, out dummy));
}
Assert.Equal(0, dict.Count);
Assert.Equal(8, dict.Capacity);
}
public void AddDeleted()
{
var dict = new FastDictionary <int, int>(16);
dict.Add(1, 1);
dict.Add(2, 2);
dict.Remove(1);
dict.Add(17, 17);
Assert.False(dict.Contains(1));
Assert.True(dict.Contains(2));
Assert.True(dict.Contains(17));
Assert.Equal(2, dict.Count);
Assert.Equal(16, dict.Capacity);
}
public void ConsecutiveInsertionsAndGrow()
{
var dict = new FastDictionary <int, int>(4);
for (int i = 0; i < 100; i++)
{
dict.Add(i, i);
}
for (int i = 0; i < 100; i++)
{
Assert.True(dict.Contains(i));
Assert.Equal(i, dict[i]);
}
Assert.Equal(100, dict.Count);
Assert.Equal(256, dict.Capacity);
}
public void InsertDeleted()
{
var dict = new FastDictionary <int, int>(16);
dict[1] = 1;
dict[2] = 2;
dict.Remove(1);
dict[17] = 17;
Assert.False(dict.Contains(1));
Assert.True(dict.Contains(2));
Assert.True(dict.Contains(17));
Assert.Equal(2, dict.Count);
Assert.Equal(16, dict.Capacity);
}
public void UseOfOfBoundsHashes()
{
var dict = new FastDictionary <int, int>(16, new ForceOutOfRangeHashesEqualityComparer());
dict[1] = 1;
dict[2] = 2;
Assert.Equal(1, dict[1]);
Assert.Equal(2, dict[2]);
dict.Remove(1);
Assert.False(dict.Contains(1));
Assert.True(dict.Contains(2));
dict.Remove(2);
Assert.False(dict.Contains(1));
Assert.False(dict.Contains(2));
}
public void ValuesArePresent()
{
var dict = new FastDictionary <int, int>(4);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
int count = 0;
foreach (var value in dict.Values.ToList())
{
Assert.True(dict.ContainsValue(value));
count++;
}
Assert.Equal(100, count);
}
public void Construction()
{
var dict = new FastDictionary <int, int>();
Assert.Equal(0, dict.Count);
Assert.Equal(32, dict.Capacity);
Assert.NotNull(dict.Comparer);
dict = new FastDictionary <int, int>(null as IEqualityComparer <int>);
Assert.Equal(0, dict.Count);
Assert.Equal(32, dict.Capacity);
Assert.NotNull(dict.Comparer);
dict = new FastDictionary <int, int>(16);
Assert.Equal(0, dict.Count);
Assert.Equal(16, dict.Capacity);
Assert.NotNull(dict.Comparer);
}
public void Clear()
{
var dict = new FastDictionary <int, int>(200);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
dict.Clear();
Assert.Equal(0, dict.Count);
Assert.Equal(256, dict.Capacity);
for (int i = 0; i < 100; i++)
{
Assert.False(dict.Contains(i));
}
}
public void KeysArePresent()
{
var dict = new FastDictionary <int, int>(4);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
int count = 0;
foreach (var key in dict.Keys.ToList())
{
Assert.True(dict.ContainsKey(key));
Assert.Equal(key, dict[key]);
count++;
}
Assert.Equal(100, count);
}
public void ConstructionWithNativeDictionary()
{
var dict = new Dictionary <int, int>(200, EqualityComparer <int> .Default);
for (int i = 0; i < 100; i++)
{
dict[i] = i;
}
var fromFastDictionary = new FastDictionary <int, int>(dict.Count, dict, EqualityComparer <int> .Default);
Assert.Equal(dict.Count, fromFastDictionary.Count);
Assert.Equal(dict.Comparer, fromFastDictionary.Comparer);
int count = 0;
foreach (var item in fromFastDictionary)
{
Assert.Equal(item.Key, item.Value);
count++;
}
Assert.Equal(100, count);
}
public FastDictionary(int initialBucketCount, FastDictionary <TKey, TValue> src, IEqualityComparer <TKey> comparer)
{
Contract.Requires(src != null);
Contract.Ensures(_capacity >= initialBucketCount);
Contract.Ensures(_capacity >= src._capacity);
this.comparer = comparer ?? EqualityComparer <TKey> .Default;
this._initialCapacity = DictionaryHelper.NextPowerOf2(initialBucketCount);
this._capacity = Math.Max(src._capacity, initialBucketCount);
this._capacityM1 = this._capacity - 1;
this._size = src._size;
this._numberOfUsed = src._numberOfUsed;
this._numberOfDeleted = src._numberOfDeleted;
this._nextGrowthThreshold = src._nextGrowthThreshold;
int newCapacity = _capacity;
if (comparer == src.comparer)
{
// Initialization through copy (very efficient) because the comparer is the same.
this._entries = new Entry[newCapacity];
Array.Copy(src._entries, _entries, newCapacity);
}
else
{
// Initialization through rehashing because the comparer is not the same.
var entries = new Entry[newCapacity];
BlockCopyMemoryHelper.Memset(entries, new Entry(kUnusedHash, default(TKey), default(TValue)));
// Creating a temporary alias to use for rehashing.
this._entries = src._entries;
// This call will rewrite the aliases
Rehash(entries);
}
}
public FastDictionary(FastDictionary <TKey, TValue> src, IEqualityComparer <TKey> comparer)
: this(src._capacity, src, comparer)
{
}
internal Enumerator(FastDictionary <TKey, TValue> dictionary)
{
this.dictionary = dictionary;
index = 0;
currentValue = default(TValue);
}
public ValueCollection(FastDictionary <TKey, TValue> dictionary)
{
Contract.Requires(dictionary != null);
this.dictionary = dictionary;
}
internal Enumerator(FastDictionary <TKey, TValue> dictionary)
{
this.dictionary = dictionary;
this.index = 0;
this.current = new KeyValuePair <TKey, TValue>();
}
public FastDictionary(FastDictionary <TKey, TValue> src)
: this(src._capacity, src, src.comparer)
{
}