Class Renumerable

Provides additional methods for working with objects that implement IEnumerable<T>.

Inheritance
Object
Renumerable
Inherited Members
Namespace: Recore.Linq
Assembly: Recore.dll
Syntax
public static class Renumerable

Methods

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Argmax(IEnumerable<Decimal>)

Returns the maximum value and the index of the maximum value from a sequence of Decimal values.

Declaration
public static (int Argmax, decimal Max) Argmax(this IEnumerable<decimal> source)
Parameters
Type Name Description
IEnumerable<Decimal> source
Returns
Type Description
ValueTuple<Int32, Decimal>
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Argmax(IEnumerable<Double>)

Returns the maximum value and the index of the maximum value from a sequence of Double values.

Declaration
public static (int Argmax, double Max) Argmax(this IEnumerable<double> source)
Parameters
Type Name Description
IEnumerable<Double> source
Returns
Type Description
ValueTuple<Int32, Double>
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Argmax(IEnumerable<Int32>)

Returns the maximum value and the index of the maximum value from a sequence of Int32 values.

Declaration
public static (int Argmax, int Max) Argmax(this IEnumerable<int> source)
Parameters
Type Name Description
IEnumerable<Int32> source
Returns
Type Description
ValueTuple<Int32, Int32>
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Argmax(IEnumerable<Int64>)

Returns the maximum value and the index of the maximum value from a sequence of Int64 values.

Declaration
public static (int Argmax, long Max) Argmax(this IEnumerable<long> source)
Parameters
Type Name Description
IEnumerable<Int64> source
Returns
Type Description
ValueTuple<Int32, Int64>
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Argmax(IEnumerable<Nullable<Decimal>>)

Returns the maximum value and the index of the maximum value from a sequence of nullable Decimal values.

Declaration
public static (int Argmax, decimal? Max) Argmax(this IEnumerable<decimal?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Decimal>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Decimal>>
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Argmax(IEnumerable<Nullable<Double>>)

Returns the maximum value and the index of the maximum value from a sequence of nullable Double values.

Declaration
public static (int Argmax, double? Max) Argmax(this IEnumerable<double?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Double>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Double>>
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Argmax(IEnumerable<Nullable<Int32>>)

Returns the maximum value and the index of the maximum value from a sequence of nullable Int32 values.

Declaration
public static (int Argmax, int? Max) Argmax(this IEnumerable<int?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Int32>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Int32>>
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Argmax(IEnumerable<Nullable<Int64>>)

Returns the maximum value and the index of the maximum value from a sequence of nullable Int64 values.

Declaration
public static (int Argmax, long? Max) Argmax(this IEnumerable<long?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Int64>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Int64>>
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Argmax(IEnumerable<Nullable<Single>>)

Returns the maximum value and the index of the maximum value from a sequence of nullable Single values.

Declaration
public static (int Argmax, float? Max) Argmax(this IEnumerable<float?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Single>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Single>>
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Argmax(IEnumerable<Single>)

Returns the maximum value and the index of the maximum value from a sequence of Single values.

Declaration
public static (int Argmax, float Max) Argmax(this IEnumerable<float> source)
Parameters
Type Name Description
IEnumerable<Single> source
Returns
Type Description
ValueTuple<Int32, Single>
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Argmax<TSource>(IEnumerable<TSource>)

Returns the maximum value and the index of the maximum value from a sequence of values.

Declaration
public static (int Argmax, TSource Max) Argmax<TSource>(this IEnumerable<TSource> source)
Parameters
Type Name Description
IEnumerable<TSource> source
Returns
Type Description
ValueTuple<Int32, TSource>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)

Returns the maximum value and the maximizing value for a function returning Decimal on a sequence of values.

Declaration
public static (TSource Argmax, decimal Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, decimal> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Decimal> selector
Returns
Type Description
ValueTuple<TSource, Decimal>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Double>)

Returns the maximum value and the maximizing value for a function returning Double on a sequence of values.

Declaration
public static (TSource Argmax, double Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, double> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Double> selector
Returns
Type Description
ValueTuple<TSource, Double>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)

Returns the maximum value and the maximizing value for a function returning Int32 on a sequence of values.

Declaration
public static (TSource Argmax, int Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, int> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Int32> selector
Returns
Type Description
ValueTuple<TSource, Int32>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)

Returns the maximum value and the maximizing value for a function returning Int64 on a sequence of values.

Declaration
public static (TSource Argmax, long Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, long> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Int64> selector
Returns
Type Description
ValueTuple<TSource, Int64>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)

Returns the maximum value and the maximizing value for a function returning nullable Decimal on a sequence of values.

Declaration
public static (TSource Argmax, decimal? Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, decimal?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Decimal>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Decimal>>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)

Returns the maximum value and the maximizing value for a function returning nullable Double on a sequence of values.

Declaration
public static (TSource Argmax, double? Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, double?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Double>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Double>>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)

Returns the maximum value and the maximizing value for a function returning nullable Int32 on a sequence of values.

Declaration
public static (TSource Argmax, int? Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, int?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Int32>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Int32>>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)

Returns the maximum value and the maximizing value for a function returning nullable Int64 on a sequence of values.

Declaration
public static (TSource Argmax, long? Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, long?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Int64>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Int64>>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)

Returns the maximum value and the maximizing value for a function returning nullable Single on a sequence of values.

Declaration
public static (TSource Argmax, float? Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, float?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Single>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Single>>
Type Parameters
Name Description
TSource
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Argmax<TSource>(IEnumerable<TSource>, Func<TSource, Single>)

Returns the maximum value and the maximizing value for a function returning Single on a sequence of values.

Declaration
public static (TSource Argmax, float Max) Argmax<TSource>(this IEnumerable<TSource> source, Func<TSource, float> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Single> selector
Returns
Type Description
ValueTuple<TSource, Single>
Type Parameters
Name Description
TSource
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Argmax<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)

Returns the maximum value and the maximizing value for a function on a sequence of values.

Declaration
public static (TSource Argmax, TResult Max) Argmax<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, TResult> selector
Returns
Type Description
ValueTuple<TSource, TResult>
Type Parameters
Name Description
TSource
TResult
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Argmin(IEnumerable<Decimal>)

Returns the minimum value and the index of the minimum value from a sequence of Decimal values.

Declaration
public static (int Argmin, decimal Min) Argmin(this IEnumerable<decimal> source)
Parameters
Type Name Description
IEnumerable<Decimal> source
Returns
Type Description
ValueTuple<Int32, Decimal>
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Argmin(IEnumerable<Double>)

Returns the minimum value and the index of the minimum value from a sequence of Double values.

Declaration
public static (int Argmin, double Min) Argmin(this IEnumerable<double> source)
Parameters
Type Name Description
IEnumerable<Double> source
Returns
Type Description
ValueTuple<Int32, Double>
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Argmin(IEnumerable<Int32>)

Returns the minimum value and the index of the minimum value from a sequence of Int32 values.

Declaration
public static (int Argmin, int Min) Argmin(this IEnumerable<int> source)
Parameters
Type Name Description
IEnumerable<Int32> source
Returns
Type Description
ValueTuple<Int32, Int32>
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Argmin(IEnumerable<Int64>)

Returns the minimum value and the index of the minimum value from a sequence of Int64 values.

Declaration
public static (int Argmin, long Min) Argmin(this IEnumerable<long> source)
Parameters
Type Name Description
IEnumerable<Int64> source
Returns
Type Description
ValueTuple<Int32, Int64>
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Argmin(IEnumerable<Nullable<Decimal>>)

Returns the minimum value and the index of the minimum value from a sequence of nullable Decimal values.

Declaration
public static (int Argmin, decimal? Min) Argmin(this IEnumerable<decimal?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Decimal>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Decimal>>
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Argmin(IEnumerable<Nullable<Double>>)

Returns the minimum value and the index of the minimum value from a sequence of nullable Double values.

Declaration
public static (int Argmin, double? Min) Argmin(this IEnumerable<double?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Double>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Double>>
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Argmin(IEnumerable<Nullable<Int32>>)

Returns the minimum value and the index of the minimum value from a sequence of nullable Int32 values.

Declaration
public static (int Argmin, int? Min) Argmin(this IEnumerable<int?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Int32>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Int32>>
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Argmin(IEnumerable<Nullable<Int64>>)

Returns the minimum value and the index of the minimum value from a sequence of nullable Int64 values.

Declaration
public static (int Argmin, long? Min) Argmin(this IEnumerable<long?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Int64>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Int64>>
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Argmin(IEnumerable<Nullable<Single>>)

Returns the minimum value and the index of the minimum value from a sequence of nullable Single values.

Declaration
public static (int Argmin, float? Min) Argmin(this IEnumerable<float?> source)
Parameters
Type Name Description
IEnumerable<Nullable<Single>> source
Returns
Type Description
ValueTuple<Int32, Nullable<Single>>
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Argmin(IEnumerable<Single>)

Returns the minimum value and the index of the minimum value from a sequence of Single values.

Declaration
public static (int Argmin, float Min) Argmin(this IEnumerable<float> source)
Parameters
Type Name Description
IEnumerable<Single> source
Returns
Type Description
ValueTuple<Int32, Single>
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Argmin<TSource>(IEnumerable<TSource>)

Returns the minimum value and the index of the minimum value from a sequence of values.

Declaration
public static (int Argmin, TSource Min) Argmin<TSource>(this IEnumerable<TSource> source)
Parameters
Type Name Description
IEnumerable<TSource> source
Returns
Type Description
ValueTuple<Int32, TSource>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Decimal>)

Returns the minimum value and the minimizing value for a function returning nullable Decimal on a sequence of values.

Declaration
public static (TSource Argmin, decimal Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, decimal> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Decimal> selector
Returns
Type Description
ValueTuple<TSource, Decimal>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Double>)

Returns the minimum value and the minimizing value for a function returning Double on a sequence of values.

Declaration
public static (TSource Argmin, double Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, double> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Double> selector
Returns
Type Description
ValueTuple<TSource, Double>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Int32>)

Returns the minimum value and the minimizing value for a function returning Int32 on a sequence of values.

Declaration
public static (TSource Argmin, int Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, int> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Int32> selector
Returns
Type Description
ValueTuple<TSource, Int32>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Int64>)

Returns the minimum value and the minimizing value for a function returning Int64 on a sequence of values.

Declaration
public static (TSource Argmin, long Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, long> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Int64> selector
Returns
Type Description
ValueTuple<TSource, Int64>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Decimal>>)

Returns the minimum value and the minimizing value for a function returning nullable Decimal on a sequence of values.

Declaration
public static (TSource Argmin, decimal? Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, decimal?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Decimal>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Decimal>>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Double>>)

Returns the minimum value and the minimizing value for a function returning nullable Double on a sequence of values.

Declaration
public static (TSource Argmin, double? Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, double?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Double>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Double>>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int32>>)

Returns the minimum value and the minimizing value for a function returning nullable Int32 on a sequence of values.

Declaration
public static (TSource Argmin, int? Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, int?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Int32>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Int32>>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int64>>)

Returns the minimum value and the minimizing value for a function returning nullable Int64 on a sequence of values.

Declaration
public static (TSource Argmin, long? Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, long?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Int64>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Int64>>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Single>>)

Returns the minimum value and the minimizing value for a function returning nullable Single on a sequence of values.

Declaration
public static (TSource Argmin, float? Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, float?> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Nullable<Single>> selector
Returns
Type Description
ValueTuple<TSource, Nullable<Single>>
Type Parameters
Name Description
TSource
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Argmin<TSource>(IEnumerable<TSource>, Func<TSource, Single>)

Returns the minimum value and the minimizing value for a function returning Single on a sequence of values.

Declaration
public static (TSource Argmin, float Min) Argmin<TSource>(this IEnumerable<TSource> source, Func<TSource, float> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, Single> selector
Returns
Type Description
ValueTuple<TSource, Single>
Type Parameters
Name Description
TSource
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Argmin<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)

Returns the minimum value and the minimizing value for a function on a sequence of values.

Declaration
public static (TSource Argmin, TResult Min) Argmin<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector)
Parameters
Type Name Description
IEnumerable<TSource> source
Func<TSource, TResult> selector
Returns
Type Description
ValueTuple<TSource, TResult>
Type Parameters
Name Description
TSource
TResult
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Enumerate<TSource>(IEnumerable<TSource>)

Returns each element from a sequence along with its number from the beginning of the sequence, starting from zero.

Declaration
public static IEnumerable<(int Index, TSource Item)> Enumerate<TSource>(this IEnumerable<TSource> source)
Parameters
Type Name Description
IEnumerable<TSource> source
Returns
Type Description
IEnumerable<ValueTuple<Int32, TSource>>
Type Parameters
Name Description
TSource
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Flatten<TSource>(IEnumerable<IEnumerable<TSource>>)

Converts a sequence of sequences into a single sequence.

Declaration
public static IEnumerable<TSource> Flatten<TSource>(this IEnumerable<IEnumerable<TSource>> source)
Parameters
Type Name Description
IEnumerable<IEnumerable<TSource>> source
Returns
Type Description
IEnumerable<TSource>
Type Parameters
Name Description
TSource
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ForEach<TSource>(IEnumerable<TSource>, Action<TSource>)

Performs an action on each element in a sequence.

Declaration
public static void ForEach<TSource>(this IEnumerable<TSource> source, Action<TSource> action)
Parameters
Type Name Description
IEnumerable<TSource> source
Action<TSource> action
Type Parameters
Name Description
TSource
Remarks

This method is evaluated eagerly.

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Lift<T>(Action<T>)

Converts an action operating on a scalar value to an action operating on a sequence of values.

Declaration
public static Action<IEnumerable<T>> Lift<T>(Action<T> action)
Parameters
Type Name Description
Action<T> action
Returns
Type Description
Action<IEnumerable<T>>
Type Parameters
Name Description
T
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Lift<T, TResult>(Func<T, TResult>)

Converts a function operating on a scalar value to a function operating on a sequence of values.

Declaration
public static Func<IEnumerable<T>, IEnumerable<TResult>> Lift<T, TResult>(Func<T, TResult> func)
Parameters
Type Name Description
Func<T, TResult> func
Returns
Type Description
Func<IEnumerable<T>, IEnumerable<TResult>>
Type Parameters
Name Description
T
TResult
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NonNull<TSource>(IEnumerable<TSource>)

Collects all non-null values from the sequence.

Declaration
public static IEnumerable<TSource> NonNull<TSource>(this IEnumerable<TSource> source)
    where TSource : class
Parameters
Type Name Description
IEnumerable<TSource> source
Returns
Type Description
IEnumerable<TSource>
Type Parameters
Name Description
TSource
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NonNull<TSource>(IEnumerable<Nullable<TSource>>)

Collects all non-null values from the sequence.

Declaration
public static IEnumerable<TSource> NonNull<TSource>(this IEnumerable<TSource?> source)
    where TSource : struct
Parameters
Type Name Description
IEnumerable<Nullable<TSource>> source
Returns
Type Description
IEnumerable<TSource>
Type Parameters
Name Description
TSource
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OnKeys<TKey, TValue, TResult>(IEnumerable<KeyValuePair<TKey, TValue>>, Func<TKey, TResult>)

Projects each key in a sequence of key-value pairs to a new form.

Declaration
public static IEnumerable<KeyValuePair<TResult, TValue>> OnKeys<TKey, TValue, TResult>(this IEnumerable<KeyValuePair<TKey, TValue>> source, Func<TKey, TResult> func)
Parameters
Type Name Description
IEnumerable<KeyValuePair<TKey, TValue>> source
Func<TKey, TResult> func
Returns
Type Description
IEnumerable<KeyValuePair<TResult, TValue>>
Type Parameters
Name Description
TKey
TValue
TResult
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OnValues<TKey, TValue, TResult>(IEnumerable<KeyValuePair<TKey, TValue>>, Func<TValue, TResult>)

Projects each value in a sequence of key-value pairs to a new form.

Declaration
public static IEnumerable<KeyValuePair<TKey, TResult>> OnValues<TKey, TValue, TResult>(this IEnumerable<KeyValuePair<TKey, TValue>> source, Func<TValue, TResult> func)
Parameters
Type Name Description
IEnumerable<KeyValuePair<TKey, TValue>> source
Func<TValue, TResult> func
Returns
Type Description
IEnumerable<KeyValuePair<TKey, TResult>>
Type Parameters
Name Description
TKey
TValue
TResult
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Product<TFirst, TSecond>(IEnumerable<TFirst>, IEnumerable<TSecond>)

Returns each element from a sequence along with its number from the beginning of the sequence, starting from zero.

Declaration
public static IEnumerable<(TFirst first, TSecond second)> Product<TFirst, TSecond>(this IEnumerable<TFirst> first, IEnumerable<TSecond> second)
Parameters
Type Name Description
IEnumerable<TFirst> first
IEnumerable<TSecond> second
Returns
Type Description
IEnumerable<ValueTuple<TFirst, TSecond>>
Type Parameters
Name Description
TFirst
TSecond
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ToAsyncEnumerable<T>(IEnumerable<Task<T>>)

Converts an sequence of tasks to IAsyncEnumerable<T>.

Declaration
public static IAsyncEnumerable<T> ToAsyncEnumerable<T>(this IEnumerable<Task<T>> source)
Parameters
Type Name Description
IEnumerable<Task<T>> source
Returns
Type Description
IAsyncEnumerable<T>
Type Parameters
Name Description
T
Remarks

This is a shim to help more methods work with IAsyncEnumerable<T> and encourage its use in a codebase.

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ToAsyncEnumerable<T>(Task<IEnumerable<T>>)

Converts an asynchronously-returned sequence of T to IAsyncEnumerable<T>.

Declaration
public static IAsyncEnumerable<T> ToAsyncEnumerable<T>(this Task<IEnumerable<T>> source)
Parameters
Type Name Description
Task<IEnumerable<T>> source
Returns
Type Description
IAsyncEnumerable<T>
Type Parameters
Name Description
T
Remarks

The IAsyncEnumerable<T> returned by this method won't yield the same throughput improvement of asynchronously generating each element in the sequence. Rather, this is a shim to help more methods work with IAsyncEnumerable<T> and encourage its use in a codebase.

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ToDictionary<TKey, TValue>(IEnumerable<KeyValuePair<TKey, TValue>>)

Creates a Dictionary<TKey,TValue> from a sequence of key-value pairs.

Declaration
public static Dictionary<TKey, TValue> ToDictionary<TKey, TValue>(this IEnumerable<KeyValuePair<TKey, TValue>> source)
Parameters
Type Name Description
IEnumerable<KeyValuePair<TKey, TValue>> source
Returns
Type Description
Dictionary<TKey, TValue>
Type Parameters
Name Description
TKey
TValue
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ToLinkedList<TSource>(IEnumerable<TSource>)

Creates a LinkedList<T> from an IEnumerable<T>.

Declaration
public static LinkedList<TSource> ToLinkedList<TSource>(this IEnumerable<TSource> source)
Parameters
Type Name Description
IEnumerable<TSource> source
Returns
Type Description
LinkedList<TSource>
Type Parameters
Name Description
TSource
Remarks

Linked lists don't need to be resized when adding elements, which can give this method better performance than ToList<TSource>(IEnumerable<TSource>) or ToArray<TSource>(IEnumerable<TSource>). A common case is when you just want to force eager evaluation of a series of operations on an IEnumerable<T> or when you want to cache elements when performing multiple enumerations. For these cases, you don't need random access to elements, which makes LinkedList<T> a suitable data structure for storing the elements.

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Zip<TFirst, TSecond>(IEnumerable<TFirst>, IEnumerable<TSecond>)

Merges two sequences to a single sequence of tuples.

Declaration
public static IEnumerable<(TFirst first, TSecond second)> Zip<TFirst, TSecond>(this IEnumerable<TFirst> first, IEnumerable<TSecond> second)
Parameters
Type Name Description
IEnumerable<TFirst> first
IEnumerable<TSecond> second
Returns
Type Description
IEnumerable<ValueTuple<TFirst, TSecond>>
Type Parameters
Name Description
TFirst
TSecond
Remarks

If the sequences are of different lengths,