Enumerable.Average<TSource> Method (IEnumerable<TSource>, Func<TSource, Double>)
Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence.
Assembly: System.Core (in System.Core.dll)
public static double Average<TSource>( this IEnumerable<TSource> source, Func<TSource, double> selector )
The type of the elements of source.
- Type: System.Collections.Generic.IEnumerable<>
A sequence of values to calculate the average of.
Return ValueType: System.Double
The average of the sequence of values.
Usage NoteIn Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<>. When you use instance method syntax to call this method, omit the first parameter.
The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource, Int64>) to calculate an average.
This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. To extend the example to this topic, change the body of the selector function.