EnumerableExt.MaxBy(TSource, TKey) Method (IEnumerable(TSource), Func(TSource, TKey), IComparer(TKey))

Returns the maximal element of the given sequence, based on the given projection and the specified comparer for projected values.

Namespace: UltimateXR.Extensions.System.Collections
Assembly: UltimateXR (in UltimateXR.dll) Version: 0.0.0.0

Syntax

public static TSource MaxBy<TSource, TKey>(
	this IEnumerable<TSource> source,
	Func<TSource, TKey> selector,
	IComparer<TKey> comparer
)

source: Type: System.Collections.Generic.IEnumerable(TSource)
Source sequence
selector: Type: System.Func(TSource, TKey)
Selector to use to pick the results to compare
comparer: Type: System.Collections.Generic.IComparer(TKey)
Comparer to use to compare projected values

Type: TSource
The maximal element, according to the projection.

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable(TSource). When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Exception	Condition
ArgumentNullException	source, selector or comparer is null
Exception	A delegate callback throws an exception.

This operator uses deferred execution. The results are evaluated and cached on first use to returned sequence.