Class ElementComparer<T>

Element-at-position comparer.
Inheritance
System.Object
ElementComparer<T>
ElementComparer
Implements
System.Collections.Generic.IComparer<T[]>
System.Collections.Generic.IEqualityComparer<T[]>
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Mars.Numerics.Comparers
Assembly: Mars.Numerics.dll
Syntax
public class ElementComparer<T> : IComparer<T[]>, IEqualityComparer<T[]> where T : IComparable, IEquatable<T>
Type Parameters
Name Description
T
Remarks
This class compares arrays by checking the value of a particular element at a given array index.
Examples
// We sort the arrays according to the 
// elements at their second column.

double[][] values =
{   //                 v
  new double[] {  0, 3, 0 },
  new double[] {  0, 4, 1 },
  new double[] { -1, 1, 1 },
  new double[] { -1, 5, 4 },
  new double[] { -2, 2, 6 },
};

// Sort the array considering only the second column
Array.Sort(values, new ElementComparer() { Index = 1 });

// The result will be
double[][] result =
{
  new double[] { -1, 1, 1 },
  new double[] { -2, 2, 6 },
  new double[] {  0, 3, 0 },
  new double[] {  0, 4, 1 },
  new double[] { -1, 5, 4 },
};

Properties

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Index

Gets or sets the element index to compare.
Declaration
public int Index { get; set; }
Property Value
Type Description
System.Int32
Remarks
This class compares arrays by checking the value of a particular element at a given array index.
See Also

Methods

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Compare(T[], T[])

Compares two objects and returns a value indicating whether one is less than, equal to, or greater than the other.
Declaration
public int Compare(T[] x, T[] y)
Parameters
Type Name Description
T[] x The first object to compare.
T[] y The second object to compare.
Returns
Type Description
System.Int32
Remarks
This class compares arrays by checking the value of a particular element at a given array index.
See Also
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Equals(T[], T[])

Determines whether two instances are equal.
Declaration
public bool Equals(T[] x, T[] y)
Parameters
Type Name Description
T[] x The first object to compare.
T[] y The second object to compare.
Returns
Type Description
System.Boolean true if the specified object is equal to the other; otherwise, false.
Remarks
This class compares arrays by checking the value of a particular element at a given array index.
See Also
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GetHashCode(T[])

Returns a hash code for a given instance.
Declaration
public int GetHashCode(T[] obj)
Parameters
Type Name Description
T[] obj The instance.
Returns
Type Description
System.Int32 A hash code for the instance, suitable for use in hashing algorithms and data structures like a hash table.
Remarks
This class compares arrays by checking the value of a particular element at a given array index.
See Also

Implements

System.Collections.Generic.IComparer<T>
System.Collections.Generic.IEqualityComparer<T>

Extension Methods

See Also