Class EnumerableUtility

This utility class provides a set of static methods for querying objects that implement System.Collections.Generic.IEnumerable<T>.

Inheritance

System.Object

EnumerableUtility

Namespace: Cuemon.Collections.Generic

Assembly: Cuemon.Core.dll

Syntax

public static class EnumerableUtility

Methods

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Chunk<TSource>(ref IEnumerable<TSource>)

Returns a chunked System.Collections.Generic.IEnumerable<T> sequence with a maximum of 128 elements.

Declaration

public static IEnumerable<TSource> Chunk<TSource>(ref IEnumerable<TSource> source)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	An System.Collections.Generic.IEnumerable<T> to chunk into smaller slices for a batch run or similar.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains no more than 128 elements from the `source` sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

Remarks

The original source is reduced equivalent to the number of elements in the returned sequence.

Exceptions

Type	Condition
System.ArgumentNullException	`source` is null.

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Chunk<TSource>(ref IEnumerable<TSource>, Int32)

Returns a chunked System.Collections.Generic.IEnumerable<T> sequence with a maximum of the specified size. Default is 128.

Declaration

public static IEnumerable<TSource> Chunk<TSource>(ref IEnumerable<TSource> source, int size)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	An System.Collections.Generic.IEnumerable<T> to chunk into smaller slices for a batch run or similar.
System.Int32	size	The amount of elements to process at a time.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains no more than the specified `size` of elements from the `source` sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

Remarks

The original source is reduced equivalent to the number of elements in the returned sequence.

Exceptions

Type	Condition
System.ArgumentNullException	`source` is null.
System.ArgumentException	`size` is less or equal to 0.

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Concat<TSource>(IEnumerable<TSource>[])

Concatenates the specified sequences in sources into one sequence.

Declaration

public static IEnumerable<TSource> Concat<TSource>(params IEnumerable<TSource>[] sources)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>[]	sources	The sequences to concatenate into one System.Collections.Generic.IEnumerable<T>.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains the concatenated elements of the specified sequences in `sources`.

Type Parameters

Name	Description
TSource	The type of the elements of the input sequences of .

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Contains<TSource>(IEnumerable<TSource>, TSource, IEqualityComparer<TSource>)

Determines whether a sequence contains a specified element by using a specified System.Collections.Generic.IEqualityComparer<T>.

Declaration

public static bool Contains<TSource>(IEnumerable<TSource> source, TSource value, IEqualityComparer<TSource> comparer)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence in which to locate a value.
TSource	value	The value to locate in the sequence.
System.Collections.Generic.IEqualityComparer<TSource>	comparer	An equality comparer to compare values.

Returns

Type	Description
System.Boolean	`true` if the source sequence contains an element that has the specified value; otherwise, `false`.

Type Parameters

Name	Description
TSource	The type of the System.Collections.Generic.IEnumerable<T> of .

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Contains<TSource>(IEnumerable<TSource>, TSource, Func<TSource, TSource, Boolean>)

Determines whether a sequence contains a specified element by using a specified System.Collections.Generic.IEqualityComparer<T>.

Declaration

public static bool Contains<TSource>(IEnumerable<TSource> source, TSource value, Func<TSource, TSource, bool> condition)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence in which to locate a value.
TSource	value	The value to locate in the sequence.
System.Func<TSource, TSource, System.Boolean>	condition	The function delegate that will compare values from the `source` sequence with `value`.

Returns

Type	Description
System.Boolean	`true` if the source sequence contains an element that has the specified value; otherwise, `false`.

Type Parameters

Name	Description
TSource	The type of the System.Collections.Generic.IEnumerable<T> of .

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FindAll<TSource>(IEnumerable<TSource>, Func<TSource, Boolean>)

Retrieves all the elements that match the conditions defined by the specified predicate.

Declaration

public static IEnumerable<TSource> FindAll<TSource>(IEnumerable<TSource> source, Func<TSource, bool> match)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.

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FindAll<TSource, T1, T2, T3, T4, T5, T6, T7, T8, T9>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, T9, Boolean>, T1, T2, T3, T4, T5, T6, T7, T8, T9)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4, T5, T6, T7, T8, T9>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, T9, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7, T8 arg8, T9 arg9)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, T9, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.
T5	arg5	The fifth parameter of the function delegate `match`.
T6	arg6	The sixth parameter of the function delegate `match`.
T7	arg7	The seventh parameter of the function delegate `match`.
T8	arg8	The eighth parameter of the function delegate `match`.
T9	arg9	The ninth parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.
T5	The type of the fifth parameter of the function delegate `match`.
T6	The type of the sixth parameter of the function delegate `match`.
T7	The type of the seventh parameter of the function delegate `match`.
T8	The type of the eighth parameter of the function delegate `match`.
T9	The type of the ninth parameter of the function delegate `match`.

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FindAll<TSource, T>(IEnumerable<TSource>, Func<TSource, T, Boolean>, T)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T>(IEnumerable<TSource> source, Func<TSource, T, bool> match, T arg)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T	arg	The first parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T	The type of the first parameter of the function delegate `match`.

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FindAll<TSource, T1, T2>(IEnumerable<TSource>, Func<TSource, T1, T2, Boolean>, T1, T2)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2>(IEnumerable<TSource> source, Func<TSource, T1, T2, bool> match, T1 arg1, T2 arg2)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, Boolean>, T1, T2, T3)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, bool> match, T1 arg1, T2 arg2, T3 arg3)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3, T4>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, Boolean>, T1, T2, T3, T4)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3, T4, T5>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, T5, Boolean>, T1, T2, T3, T4, T5)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4, T5>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, T5, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, T5, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.
T5	arg5	The fifth parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.
T5	The type of the fifth parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3, T4, T5, T6>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, T5, T6, Boolean>, T1, T2, T3, T4, T5, T6)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4, T5, T6>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, T5, T6, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, T5, T6, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.
T5	arg5	The fifth parameter of the function delegate `match`.
T6	arg6	The sixth parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.
T5	The type of the fifth parameter of the function delegate `match`.
T6	The type of the sixth parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3, T4, T5, T6, T7>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, T5, T6, T7, Boolean>, T1, T2, T3, T4, T5, T6, T7)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4, T5, T6, T7>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, T5, T6, T7, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, T5, T6, T7, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.
T5	arg5	The fifth parameter of the function delegate `match`.
T6	arg6	The sixth parameter of the function delegate `match`.
T7	arg7	The seventh parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.
T5	The type of the fifth parameter of the function delegate `match`.
T6	The type of the sixth parameter of the function delegate `match`.
T7	The type of the seventh parameter of the function delegate `match`.

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FindAll<TSource, T1, T2, T3, T4, T5, T6, T7, T8>(IEnumerable<TSource>, Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, Boolean>, T1, T2, T3, T4, T5, T6, T7, T8)

Retrieves all the elements that match the conditions defined by the specified function delegate.

Declaration

public static IEnumerable<TSource> FindAll<TSource, T1, T2, T3, T4, T5, T6, T7, T8>(IEnumerable<TSource> source, Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, bool> match, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7, T8 arg8)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<TSource, T1, T2, T3, T4, T5, T6, T7, T8, System.Boolean>	match	The function delegate that defines the conditions of the elements to search for.
T1	arg1	The first parameter of the function delegate `match`.
T2	arg2	The second parameter of the function delegate `match`.
T3	arg3	The third parameter of the function delegate `match`.
T4	arg4	The fourth parameter of the function delegate `match`.
T5	arg5	The fifth parameter of the function delegate `match`.
T6	arg6	The sixth parameter of the function delegate `match`.
T7	arg7	The seventh parameter of the function delegate `match`.
T8	arg8	The eighth parameter of the function delegate `match`.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence containing all the elements that match the conditions defined by the specified predicate, if found; otherwise, an empty System.Collections.Generic.IEnumerable<T>.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `match`.
T2	The type of the second parameter of the function delegate `match`.
T3	The type of the third parameter of the function delegate `match`.
T4	The type of the fourth parameter of the function delegate `match`.
T5	The type of the fifth parameter of the function delegate `match`.
T6	The type of the sixth parameter of the function delegate `match`.
T7	The type of the seventh parameter of the function delegate `match`.
T8	The type of the eighth parameter of the function delegate `match`.

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RandomOrDefault<TSource>(IEnumerable<TSource>)

Returns a random element of a sequence of elements, or a default value if no element is found.

Declaration

public static TSource RandomOrDefault<TSource>(IEnumerable<TSource> source)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The System.Collections.Generic.IEnumerable<T> to return a random element of.

Returns

Type	Description
TSource	default(TSource) if source is empty; otherwise, a random element of `source`.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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RandomOrDefault<TSource>(IEnumerable<TSource>, Func<IEnumerable<TSource>, TSource>)

Returns a random element of a sequence of elements, or a default value if no element is found.

Declaration

public static TSource RandomOrDefault<TSource>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, TSource> randomizer)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The System.Collections.Generic.IEnumerable<T> to return a random element of.
System.Func<System.Collections.Generic.IEnumerable<TSource>, TSource>	randomizer	The function delegate that will select a random element of `source`.

Returns

Type	Description
TSource	default(TSource) if source is empty; otherwise, a random element of `source`.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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RangeOf<T>(Int32, Func<Int32, T>)

Generates a sequence of T within a specified range.

Declaration

public static IEnumerable<T> RangeOf<T>(int count, Func<int, T> resolver)

Parameters

Type	Name	Description
System.Int32	count	The number of objects of `T` to generate.
System.Func<System.Int32, T>	resolver	The function delegate that will resolve the value of `T`; the parameter passed to the delegate represents the index of the element to return.

Returns

Type	Description
System.Collections.Generic.IEnumerable<T>	An System.Collections.Generic.IEnumerable<T> that contains a range of `T` elements.

Type Parameters

Name	Description
T	The type of the elements to return.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	`count` is less than 0.

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SelectOne<TSource>(IEnumerable<TSource>, Func<IEnumerable<TSource>, TSource>)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, TSource> selector)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, TSource>	selector	The function delegate that defines the condition of the element to retrieve.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.

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SelectOne<TSource, T>(IEnumerable<TSource>, Func<IEnumerable<TSource>, T, TSource>, T)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource, T>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, T, TSource> selector, T arg)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, T, TSource>	selector	The function delegate that defines the condition of the element to retrieve.
T	arg	The parameter of the function delegate `selector`.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T	The type of the parameter of the function delegate `selector`.

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SelectOne<TSource, T1, T2>(IEnumerable<TSource>, Func<IEnumerable<TSource>, T1, T2, TSource>, T1, T2)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource, T1, T2>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, T1, T2, TSource> selector, T1 arg1, T2 arg2)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, T1, T2, TSource>	selector	The function delegate that defines the condition of the element to retrieve.
T1	arg1	The first parameter of the function delegate `selector`.
T2	arg2	The second parameter of the function delegate `selector`.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `selector`.
T2	The type of the second parameter of the function delegate `selector`.

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SelectOne<TSource, T1, T2, T3>(IEnumerable<TSource>, Func<IEnumerable<TSource>, T1, T2, T3, TSource>, T1, T2, T3)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource, T1, T2, T3>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, T1, T2, T3, TSource> selector, T1 arg1, T2 arg2, T3 arg3)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, T1, T2, T3, TSource>	selector	The function delegate that defines the condition of the element to retrieve.
T1	arg1	The first parameter of the function delegate `selector`.
T2	arg2	The second parameter of the function delegate `selector`.
T3	arg3	The third parameter of the function delegate `selector`.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `selector`.
T2	The type of the second parameter of the function delegate `selector`.
T3	The type of the third parameter of the function delegate `selector`.

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SelectOne<TSource, T1, T2, T3, T4>(IEnumerable<TSource>, Func<IEnumerable<TSource>, T1, T2, T3, T4, TSource>, T1, T2, T3, T4)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource, T1, T2, T3, T4>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, T1, T2, T3, T4, TSource> selector, T1 arg1, T2 arg2, T3 arg3, T4 arg4)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, T1, T2, T3, T4, TSource>	selector	The function delegate that defines the condition of the element to retrieve.
T1	arg1	The first parameter of the function delegate `selector`.
T2	arg2	The second parameter of the function delegate `selector`.
T3	arg3	The third parameter of the function delegate `selector`.
T4	arg4	The fourth parameter of the function delegate `selector`.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `selector`.
T2	The type of the second parameter of the function delegate `selector`.
T3	The type of the third parameter of the function delegate `selector`.
T4	The type of the fourth parameter of the function delegate `selector`.

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SelectOne<TSource, T1, T2, T3, T4, T5>(IEnumerable<TSource>, Func<IEnumerable<TSource>, T1, T2, T3, T4, T5, TSource>, T1, T2, T3, T4, T5)

Retrieves the element that matches the conditions defined by the specified selector.

Declaration

public static TSource SelectOne<TSource, T1, T2, T3, T4, T5>(IEnumerable<TSource> source, Func<IEnumerable<TSource>, T1, T2, T3, T4, T5, TSource> selector, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	The sequence to search.
System.Func<System.Collections.Generic.IEnumerable<TSource>, T1, T2, T3, T4, T5, TSource>	selector	The function delegate that defines the condition of the element to retrieve.
T1	arg1	The first parameter of the function delegate `selector`.
T2	arg2	The second parameter of the function delegate `selector`.
T3	arg3	The third parameter of the function delegate `selector`.
T4	arg4	The fourth parameter of the function delegate `selector`.
T5	arg5	The fifth parameter of the function delegate `selector`.

Returns

Type	Description
TSource	A `TSource` element that matched the conditions defined by the specified `selector`.

Type Parameters

Name	Description
TSource	The type of the elements of the sequence.
T1	The type of the first parameter of the function delegate `selector`.
T2	The type of the second parameter of the function delegate `selector`.
T3	The type of the third parameter of the function delegate `selector`.
T4	The type of the fourth parameter of the function delegate `selector`.
T5	The type of the fifth parameter of the function delegate `selector`.

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SortAscending<TSource>(IEnumerable<TSource>)

Returns ascending sorted elements from a sequence by using the default comparer to compare values.

Declaration

public static IEnumerable<TSource> SortAscending<TSource>(IEnumerable<TSource> source)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains ascending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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SortAscending<TSource>(IEnumerable<TSource>, IComparer<TSource>)

Returns ascending sorted elements from a sequence by using a specified System.Collections.Generic.Comparer<T> to compare values.

Declaration

public static IEnumerable<TSource> SortAscending<TSource>(IEnumerable<TSource> source, IComparer<TSource> comparer)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.
System.Collections.Generic.IComparer<TSource>	comparer	An System.Collections.Generic.IComparer<T> to compare values.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains ascending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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SortAscending<TSource>(IEnumerable<TSource>, Comparison<TSource>)

Returns ascending sorted elements from a sequence by using a specified System.Collections.Generic.Comparer<T> to compare values.

Declaration

public static IEnumerable<TSource> SortAscending<TSource>(IEnumerable<TSource> source, Comparison<TSource> comparison)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.
System.Comparison<TSource>	comparison	The System.Comparison<T> to use when comparing elements.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains ascending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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SortDescending<TSource>(IEnumerable<TSource>)

Returns ascending sorted elements from a sequence by using the default comparer to compare values.

Declaration

public static IEnumerable<TSource> SortDescending<TSource>(IEnumerable<TSource> source)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains descending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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SortDescending<TSource>(IEnumerable<TSource>, IComparer<TSource>)

Returns descending sorted elements from a sequence by using a specified System.Collections.Generic.Comparer<T> to compare values.

Declaration

public static IEnumerable<TSource> SortDescending<TSource>(IEnumerable<TSource> source, IComparer<TSource> comparer)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.
System.Collections.Generic.IComparer<TSource>	comparer	An System.Collections.Generic.IComparer<T> to compare values.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains descending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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SortDescending<TSource>(IEnumerable<TSource>, Comparison<TSource>)

Returns descending sorted elements from a sequence by using a specified System.Collections.Generic.Comparer<T> to compare values.

Declaration

public static IEnumerable<TSource> SortDescending<TSource>(IEnumerable<TSource> source, Comparison<TSource> comparison)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<TSource>	source	A sequence of values to order.
System.Comparison<TSource>	comparison	The System.Comparison<T> to use when comparing elements.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> that contains descending sorted elements from the source sequence.

Type Parameters

Name	Description
TSource	The type of the elements of `source`.

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Yield<TSource>(TSource)

Returns an System.Collections.Generic.IEnumerable<T> sequence with the specified source as the only element.

Declaration

public static IEnumerable<TSource> Yield<TSource>(TSource source)

Parameters

Type	Name	Description
TSource	source	The value to yield into an System.Collections.Generic.IEnumerable<T> sequence.

Returns

Type	Description
System.Collections.Generic.IEnumerable<TSource>	An System.Collections.Generic.IEnumerable<T> sequence with the specified `source` as the only element.

Type Parameters

Name	Description
TSource	The type of `source`.