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ParallelEnumerable.Sum Method

Definition

Computes in parallel the sum of a sequence of values.

Overloads

Sum(ParallelQuery<Nullable<Single>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Int64>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Int32>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Double>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Single>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Int64>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Int32>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Double>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Decimal>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Decimal>>)

Computes in parallel the sum of a sequence of values.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Sum(ParallelQuery<Nullable<Single>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Sum(System::Linq::ParallelQuery<Nullable<float>> ^ source);
public static float? Sum (this System.Linq.ParallelQuery<float?> source);
static member Sum : System.Linq.ParallelQuery<Nullable<single>> -> Nullable<single>
<Extension()>
Public Function Sum (source As ParallelQuery(Of Nullable(Of Single))) As Nullable(Of Single)

Parameters

source
ParallelQuery<Nullable<Single>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Nullable<Int64>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<long> Sum(System::Linq::ParallelQuery<Nullable<long>> ^ source);
public static long? Sum (this System.Linq.ParallelQuery<long?> source);
static member Sum : System.Linq.ParallelQuery<Nullable<int64>> -> Nullable<int64>
<Extension()>
Public Function Sum (source As ParallelQuery(Of Nullable(Of Long))) As Nullable(Of Long)

Parameters

source
ParallelQuery<Nullable<Int64>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Int64.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Nullable<Int32>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<int> Sum(System::Linq::ParallelQuery<Nullable<int>> ^ source);
public static int? Sum (this System.Linq.ParallelQuery<int?> source);
static member Sum : System.Linq.ParallelQuery<Nullable<int>> -> Nullable<int>
<Extension()>
Public Function Sum (source As ParallelQuery(Of Nullable(Of Integer))) As Nullable(Of Integer)

Parameters

source
ParallelQuery<Nullable<Int32>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Nullable<Double>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Sum(System::Linq::ParallelQuery<Nullable<double>> ^ source);
public static double? Sum (this System.Linq.ParallelQuery<double?> source);
static member Sum : System.Linq.ParallelQuery<Nullable<double>> -> Nullable<double>
<Extension()>
Public Function Sum (source As ParallelQuery(Of Nullable(Of Double))) As Nullable(Of Double)

Parameters

source
ParallelQuery<Nullable<Double>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Single>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static float Sum(System::Linq::ParallelQuery<float> ^ source);
public static float Sum (this System.Linq.ParallelQuery<float> source);
static member Sum : System.Linq.ParallelQuery<single> -> single
<Extension()>
Public Function Sum (source As ParallelQuery(Of Single)) As Single

Parameters

source
ParallelQuery<Single>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Int64>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static long Sum(System::Linq::ParallelQuery<long> ^ source);
public static long Sum (this System.Linq.ParallelQuery<long> source);
static member Sum : System.Linq.ParallelQuery<int64> -> int64
<Extension()>
Public Function Sum (source As ParallelQuery(Of Long)) As Long

Parameters

source
ParallelQuery<Int64>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Int64.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Int32>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static int Sum(System::Linq::ParallelQuery<int> ^ source);
public static int Sum (this System.Linq.ParallelQuery<int> source);
static member Sum : System.Linq.ParallelQuery<int> -> int
<Extension()>
Public Function Sum (source As ParallelQuery(Of Integer)) As Integer

Parameters

source
ParallelQuery<Int32>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Double>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static double Sum(System::Linq::ParallelQuery<double> ^ source);
public static double Sum (this System.Linq.ParallelQuery<double> source);
static member Sum : System.Linq.ParallelQuery<double> -> double
<Extension()>
Public Function Sum (source As ParallelQuery(Of Double)) As Double

Parameters

source
ParallelQuery<Double>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Decimal>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Sum(System::Linq::ParallelQuery<System::Decimal> ^ source);
public static decimal Sum (this System.Linq.ParallelQuery<decimal> source);
static member Sum : System.Linq.ParallelQuery<decimal> -> decimal
<Extension()>
Public Function Sum (source As ParallelQuery(Of Decimal)) As Decimal

Parameters

source
ParallelQuery<Decimal>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum(ParallelQuery<Nullable<Decimal>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Sum(System::Linq::ParallelQuery<Nullable<System::Decimal>> ^ source);
public static decimal? Sum (this System.Linq.ParallelQuery<decimal?> source);
static member Sum : System.Linq.ParallelQuery<Nullable<decimal>> -> Nullable<decimal>
<Extension()>
Public Function Sum (source As ParallelQuery(Of Nullable(Of Decimal))) As Nullable(Of Decimal)

Parameters

source
ParallelQuery<Nullable<Decimal>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

source is a null reference (Nothing in Visual Basic).

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static float Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, float> ^ selector);
public static float Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,float> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, single> -> single
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Single)) As Single

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Single>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, System::Decimal> ^ selector);
public static decimal Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,decimal> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, decimal> -> decimal
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Decimal)) As Decimal

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Decimal>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, double> ^ selector);
public static double Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,double> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, double> -> double
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Double)) As Double

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Double>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static int Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, int> ^ selector);
public static int Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,int> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, int> -> int
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Integer)) As Integer

Type Parameters

TSource

The type of elements in the source sequence.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Int32>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static long Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, long> ^ selector);
public static long Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,long> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, int64> -> int64
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Long)) As Long

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Int64>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Int64.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, Nullable<System::Decimal>> ^ selector);
public static decimal? Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,decimal?> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, Nullable<decimal>> -> Nullable<decimal>
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Nullable(Of Decimal))) As Nullable(Of Decimal)

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Decimal>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, Nullable<double>> ^ selector);
public static double? Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,double?> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, Nullable<double>> -> Nullable<double>
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Nullable(Of Double))) As Nullable(Of Double)

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Double>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<int> Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, Nullable<int>> ^ selector);
public static int? Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,int?> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, Nullable<int>> -> Nullable<int>
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Nullable(Of Integer))) As Nullable(Of Integer)

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Int32>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<long> Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, Nullable<long>> ^ selector);
public static long? Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,long?> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, Nullable<int64>> -> Nullable<int64>
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Nullable(Of Long))) As Nullable(Of Long)

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Int64>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Int64.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

Sum<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Sum(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, Nullable<float>> ^ selector);
public static float? Sum<TSource> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,float?> selector);
static member Sum : System.Linq.ParallelQuery<'Source> * Func<'Source, Nullable<single>> -> Nullable<single>
<Extension()>
Public Function Sum(Of TSource) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Nullable(Of Single))) As Nullable(Of Single)

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Single>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

source or selector is a null reference (Nothing in Visual Basic).

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to