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Renaming property comparer to predicate comparer

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This commit is contained in:
Chris Cameron
2018-03-26 15:38:54 -04:00
parent 30febd4a73
commit 60137254da
6 changed files with 87 additions and 74 deletions
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39
ICD.Common.Utils/Comparers/PredicateComparer.cs Normal file
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using System;
using System.Collections.Generic;
namespace ICD.Common.Utils.Comparers
{
public sealed class PredicateComparer<TParent, TValue> : IComparer<TParent>
{
private readonly IComparer<TValue> m_Comparer;
private readonly Func<TParent, TValue> m_Predicate;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="predicate"></param>
public PredicateComparer(Func<TParent, TValue> predicate)
: this(Comparer<TValue>.Default, predicate)
{
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
/// <param name="predicate"></param>
public PredicateComparer(IComparer<TValue> comparer, Func<TParent, TValue> predicate)
{
m_Comparer = comparer;
m_Predicate = predicate;
}
public int Compare(TParent x, TParent y)
{
TValue a = m_Predicate(x);
TValue b = m_Predicate(y);
return m_Comparer.Compare(a, b);
}
}
}

45
ICD.Common.Utils/Comparers/PredicateEqualityComparer.cs Normal file
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using System;
using System.Collections.Generic;
namespace ICD.Common.Utils.Comparers
{
public sealed class PredicateEqualityComparer<TParent, TValue> : IEqualityComparer<TParent>
{
private readonly IEqualityComparer<TValue> m_Comparer;
private readonly Func<TParent, TValue> m_Predicate;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="predicate"></param>
public PredicateEqualityComparer(Func<TParent, TValue> predicate)
: this(EqualityComparer<TValue>.Default, predicate)
{
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
/// <param name="predicate"></param>
public PredicateEqualityComparer(IEqualityComparer<TValue> comparer, Func<TParent, TValue> predicate)
{
m_Comparer = comparer;
m_Predicate = predicate;
}
public bool Equals(TParent x, TParent y)
{
TValue a = m_Predicate(x);
TValue b = m_Predicate(y);
return m_Comparer.Equals(a, b);
}
public int GetHashCode(TParent parent)
{
TValue value = m_Predicate(parent);
return m_Comparer.GetHashCode(value);
}
}
}

30
ICD.Common.Utils/Comparers/PropertyComparer.cs
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@@ -1,30 +0,0 @@
using System;
using System.Collections.Generic;
namespace ICD.Common.Utils.Comparers
{
public sealed class PropertyComparer<TParent, TProperty> : IComparer<TParent>
{
private readonly IComparer<TProperty> m_Comparer;
private readonly Func<TParent, TProperty> m_GetProperty;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
/// <param name="getProperty"></param>
public PropertyComparer(IComparer<TProperty> comparer, Func<TParent, TProperty> getProperty)
{
m_Comparer = comparer;
m_GetProperty = getProperty;
}
public int Compare(TParent x, TParent y)
{
TProperty a = m_GetProperty(x);
TProperty b = m_GetProperty(y);
return m_Comparer.Compare(a, b);
}
}
}

41
ICD.Common.Utils/Comparers/PropertyEqualityComparer.cs
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@@ -1,41 +0,0 @@
using System;
using System.Collections.Generic;
namespace ICD.Common.Utils.Comparers
{
/// <summary>
/// Allows for comparing items based on some property.
/// </summary>
/// <typeparam name="TParent"></typeparam>
/// <typeparam name="TProperty"></typeparam>
public sealed class PropertyEqualityComparer<TParent, TProperty> : IEqualityComparer<TParent>
{
private readonly IEqualityComparer<TProperty> m_Comparer;
private readonly Func<TParent, TProperty> m_GetProperty;
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
/// <param name="getProperty"></param>
public PropertyEqualityComparer(IEqualityComparer<TProperty> comparer, Func<TParent, TProperty> getProperty)
{
m_Comparer = comparer;
m_GetProperty = getProperty;
}
public bool Equals(TParent x, TParent y)
{
TProperty a = m_GetProperty(x);
TProperty b = m_GetProperty(y);
return m_Comparer.Equals(a, b);
}
public int GetHashCode(TParent parent)
{
TProperty property = m_GetProperty(parent);
return m_Comparer.GetHashCode(property);
}
}
}