ArrayMath.Sum Method

Definition

Namespace: Extreme.Mathematics
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

Overload List

Sum(Double[]) Computes the sum of the elements of an array.
Sum(Double[], Int32, Int32) Computes the sum of the elements in a segment of an array.
Sum<T>(IEnumerable<T>) Computes the sum of the sequence of values.
Sum<T, U>(IEnumerable<T>, Func<T, U>) Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum(Double[])

Computes the sum of the elements of an array.
C# 
public static double Sum(
	this double[] array
)

Parameters

array  Double[]
A Double array.

Return Value

Double
The sum of the elements in array.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Double[]. 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).

Sum<T>(IEnumerable<T>)

Computes the sum of the sequence of values.
C# 
public static T Sum<T>(
	this IEnumerable<T> source
)

Parameters

source  IEnumerable<T>
A sequence of values.

Type Parameters

T
The element type of source.

Return Value

T

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<T>. 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).

Sum<T, U>(IEnumerable<T>, Func<T, U>)

Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.
C# 
public static U Sum<T, U>(
	this IEnumerable<T> source,
	Func<T, U> selector
)

Parameters

source  IEnumerable<T>
A sequence of values.
selector  Func<T, U>
A transform function to apply to each element.

Type Parameters

T
The element type of source.
U
The type of the result.

Return Value

U
The sum of the projected values.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<T>. 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).

Sum(Double[], Int32, Int32)

Computes the sum of the elements in a segment of an array.
C# 
public static double Sum(
	this double[] array,
	int startIndex,
	int Length
)

Parameters

array  Double[]
A Double array.
startIndex  Int32
The zero-based index of the first element to be included in the sum.
Length  Int32
The length of the segment.

Return Value

Double
The sum of the specified elements in array.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Double[]. 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).

See Also