public static bool IsMatch(TestClassIEquatable key, TestClassIEquatable value)
{
return((value.PInt1 == null || key.PInt1 == value.PInt1) &&
(value.PInt2 == null || key.PInt2 == value.PInt2) &&
(value.PInt3 == null || key.PInt3 == value.PInt3));
}
static void Main(string[] args)
{
int?
tmpIntNullable1,
tmpIntNullable2;
int
compareResult;
tmpIntNullable1 = null;
tmpIntNullable2 = null;
compareResult = Nullable.Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = Nullable.Compare(tmpIntNullable2, tmpIntNullable1);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable2, tmpIntNullable1);
tmpIntNullable1 = 1;
tmpIntNullable2 = null;
compareResult = Nullable.Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = Nullable.Compare(tmpIntNullable2, tmpIntNullable1);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable2, tmpIntNullable1);
tmpIntNullable1 = null;
tmpIntNullable2 = 2;
compareResult = Nullable.Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = Nullable.Compare(tmpIntNullable2, tmpIntNullable1);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable2, tmpIntNullable1);
tmpIntNullable1 = 1;
tmpIntNullable2 = 2;
compareResult = Nullable.Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable1, tmpIntNullable2);
compareResult = Nullable.Compare(tmpIntNullable2, tmpIntNullable1);
compareResult = TestClassIEquatableComparer.NullComparer <int?> .Compare(tmpIntNullable2, tmpIntNullable1);
List <TestClassIEquatable>
listTestClassIEquatable = new List <TestClassIEquatable>();
TestClassIEquatableComparer
testClassIEquatableComparer = new TestClassIEquatableComparer();
listTestClassIEquatable.Insert(new TestClassIEquatable(), testClassIEquatableComparer);
listTestClassIEquatable.Insert(new TestClassIEquatable {
PInt3 = 1
}, testClassIEquatableComparer);
listTestClassIEquatable.Insert(new TestClassIEquatable {
PInt2 = 1, PInt3 = 1
}, testClassIEquatableComparer);
listTestClassIEquatable.Insert(new TestClassIEquatable {
PInt1 = 1, PInt2 = 1, PInt3 = 1
}, testClassIEquatableComparer);
TestClassIEquatable
testClassIEquatable1 = new TestClassIEquatable {
PInt2 = 1, PInt3 = 1
},
testClassIEquatable2;
testClassIEquatable2 = listTestClassIEquatable.FirstOrDefault(item => IsMatch(testClassIEquatable1, item));
SimpleClass
simpleClassLeft = new SimpleClass {
FInt = 13
},
simpleClassRight = simpleClassLeft;
Debug.WriteLine($"simpleClassLeft {(simpleClassLeft == simpleClassRight ? "=" : "!") }= simpleClassRight");
Debug.WriteLine($"{(simpleClassLeft.Equals(simpleClassRight) ? string.Empty : "!") }simpleClassLeft.Equals(simpleClassRight)");
simpleClassRight = new SimpleClass {
FInt = 13
};
Debug.WriteLine($"simpleClassLeft {(simpleClassLeft == simpleClassRight ? "=" : "!") }= simpleClassRight");
Debug.WriteLine($"{(simpleClassLeft.Equals(simpleClassRight) ? string.Empty : "!") }simpleClassLeft.Equals(simpleClassRight)");
TestClassIComparableFull
left = new TestClassIComparableFull(13),
right = new TestClassIComparableFull(left);
var resultBool = ReferenceEquals(left, left);
Debug.WriteLine($"ReferenceEquals(left, left) = {resultBool}");
resultBool = ReferenceEquals(left, right);
Debug.WriteLine($"ReferenceEquals(left, right) = {resultBool}");
resultBool = Equals(left, right);
Debug.WriteLine($"Equals(left, right) = {resultBool}");
var dictionary = new Dictionary <TestClassIComparableFull, string>
{
{ new TestClassIComparableFull(13), "13" }
};
dictionary[left] = "1313";
List <TestClassIComparableFull>
listLeft = new List <TestClassIComparableFull>
{
new TestClassIComparableFull(13),
new TestClassIComparableFull(1),
new TestClassIComparableFull(99)
},
listRight = new List <TestClassIComparableFull>
{
new TestClassIComparableFull(69),
new TestClassIComparableFull(33),
new TestClassIComparableFull(13)
},
result;
result = listLeft.Intersect(listRight, new Comparer()).ToList();
result = listLeft.Except(listRight, new Comparer()).ToList();
result = listRight.Except(listLeft, new Comparer()).ToList();
#if TEST_PERFORMANCE
var array = new[] {
new TestClassIComparableFull(5),
new TestClassIComparableFull(-1),
new TestClassIComparableFull(0),
new TestClassIComparableFull(3),
new TestClassIComparableFull(5),
new TestClassIComparableFull(2)
};
//Debug.WriteLine("sort");
//var sort = array.OrderByDescending(item => item).ToArray();
Debug.WriteLine("sort -> distinct");
var sortDistinct = array.OrderByDescending(item => item).Distinct().ToArray();
/*
* sort -> distinct
*
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: -1})
* int CompareTo(object {FiledInt: 2})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 3})
* int CompareTo(object {FiledInt: 3})
* int CompareTo(object {FiledInt: -1})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 3})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 5})
*
* override int GetHashCode(5)
* override int GetHashCode(5)
* override bool Equals(object {FiledInt: 5})
* operator == (TestClassIComparableFull {FiledInt: 5}, TestClassIComparableFull {FiledInt: 5})
* override int GetHashCode(3)
* override int GetHashCode(2)
* override int GetHashCode(0)
* override int GetHashCode(-1)
*
*/
//Debug.WriteLine("distinct");
//var distinct = array.Distinct().ToArray();
Debug.WriteLine("distinct -> sort");
var distinctSort = array.Distinct().OrderByDescending(item => item).ToArray();
/*
* distinct -> sort
*
* override int GetHashCode(5)
* override int GetHashCode(-1)
* override int GetHashCode(0)
* override int GetHashCode(3)
* override int GetHashCode(5)
* override bool Equals(object {FiledInt: 5})
* operator == (TestClassIComparableFull {FiledInt: 5}, TestClassIComparableFull {FiledInt: 5})
* override int GetHashCode(2)
*
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: -1})
* int CompareTo(object {FiledInt: 2})
* int CompareTo(object {FiledInt: 3})
* int CompareTo(object {FiledInt: -1})
* int CompareTo(object {FiledInt: 5})
* int CompareTo(object {FiledInt: 3})
* int CompareTo(object {FiledInt: 3})
*
*/
#endif
}
