Class EnumerableExtensions

Provides extension methods for working with IEnumerable<T> collections.

Inheritance

object

EnumerableExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: mk.helpers.Types

Assembly: mk.helpers.dll

Syntax

public static class EnumerableExtensions

Methods

CountAsync<T>(IAsyncEnumerable<T>)

Declaration

public static Task<int> CountAsync<T>(this IAsyncEnumerable<T> source)

Parameters

Type	Name	Description
IAsyncEnumerable<T>	source

Returns

Type	Description
Task<int>

Type Parameters

Name	Description
T

FilterByReference<TSource, TOrder>(IEnumerable<TSource>, IEnumerable<TOrder>, Func<TSource, TOrder, bool>)

Filters items from a source collection based on a comparison predicate against a reference collection.

Declaration

public static IEnumerable<TSource> FilterByReference<TSource, TOrder>(this IEnumerable<TSource> source, IEnumerable<TOrder> orderReference, Func<TSource, TOrder, bool> comparisonPredicate)

Parameters

Type	Name	Description
IEnumerable<TSource>	source	The source collection from which to filter items.
IEnumerable<TOrder>	orderReference	The reference collection used for comparison.
Func<TSource, TOrder, bool>	comparisonPredicate	A predicate that determines whether an item in the source collection should be included based on the reference collection.

Returns

Type	Description
IEnumerable<TSource>	An IEnumerable<TSource> containing items from the source collection that satisfy the comparison predicate.

Type Parameters

Name	Description
TSource	The type of elements in the source collection.
TOrder	The type of elements in the reference collection.

Remarks

This method filters items from the source collection based on a comparison predicate against a reference collection. The comparisonPredicate function is used to determine if an item should be included in the result.

IsAnyOf<T>(T, params T[])

Checks if an item is any of a given list of items.

Declaration

public static bool IsAnyOf<T>(this T source, params T[] list)

Parameters

Type	Name	Description
T	source	The source item to check.
T[]	list	The list of items to check against.

Returns

Type	Description
bool	true if the source item is any of the items in the list; otherwise, false.

Type Parameters

Name	Description
T	The type of elements in the collection.

Median<TSource, TResult>(IEnumerable<TSource>, Func<TSource, TResult>)

Extension method to calculate the median of a sequence of numeric values using a selector. Supported types are int, decimal, double, and long.

Declaration

public static TResult Median<TSource, TResult>(this IEnumerable<TSource> source, Func<TSource, TResult> selector) where TResult : struct, IComparable<TResult>, IConvertible

Parameters

Type	Name	Description
IEnumerable<TSource>	source	An IEnumerable containing the elements.
Func<TSource, TResult>	selector	A function to extract the numeric value from each element.

Returns

Type	Description
TResult	The median value of the numeric list.

Type Parameters

Name	Description
TSource	The type of the elements in the source collection.
TResult	The numeric type of the values returned by the selector (int, decimal, double, long).

Exceptions

Type	Condition
ArgumentException	Thrown when the source sequence is empty.

PagedAsync<T>(IAsyncEnumerable<T>, int, int)

Declaration

public static Task<PagedResult<T>> PagedAsync<T>(this IAsyncEnumerable<T> source, int page, int pageSize) where T : class

Parameters

Type	Name	Description
IAsyncEnumerable<T>	source
int	page
int	pageSize

Returns

Type	Description
Task<PagedResult<T>>

Type Parameters

Name	Description
T

Paged<T>(IEnumerable<T>, int, int)

Implements paging on an IEnumerable<T> source.

Declaration

public static PagedResult<T> Paged<T>(this IEnumerable<T> source, int page, int pageSize) where T : class

Parameters

Type	Name	Description
IEnumerable<T>	source	The source collection.
int	page	The current page number.
int	pageSize	The number of items per page.

Returns

Type	Description
PagedResult<T>	A PagedResult<T> containing the paged data.

Type Parameters

Name	Description
T	The type of elements in the collection.

RemoveDuplicates<TSource>(IEnumerable<TSource>, Func<TSource, TSource, bool>)

Removes duplicate items from a collection based on a comparison predicate.

Declaration

public static IEnumerable<TSource> RemoveDuplicates<TSource>(this IEnumerable<TSource> source, Func<TSource, TSource, bool> comparisonPredicate)

Parameters

Type	Name	Description
IEnumerable<TSource>	source	The source collection to remove duplicates from.
Func<TSource, TSource, bool>	comparisonPredicate	A predicate to determine duplicate items.

Returns

Type	Description
IEnumerable<TSource>	An IEnumerable<TSource> containing unique elements based on the comparison predicate.

Type Parameters

Name	Description
TSource	The type of elements in the source collection.

SkipAsync<T>(IAsyncEnumerable<T>, int)

Declaration

public static IAsyncEnumerable<T> SkipAsync<T>(this IAsyncEnumerable<T> source, int count)

Parameters

Type	Name	Description
IAsyncEnumerable<T>	source
int	count

Returns

Type	Description
IAsyncEnumerable<T>

Type Parameters

Name	Description
T

SortByReference(List<string>, List<string>)

Declaration

public static List<string> SortByReference(this List<string> listToSort, List<string> orderReference)

Parameters

Type	Name	Description
List<string>	listToSort
List<string>	orderReference

Returns

Type	Description
List<string>

SortByReference<TSource, TOrder>(IEnumerable<TSource>, IEnumerable<TOrder>, Func<TSource, TOrder, bool>)

Sorts a collection based on the order of a reference collection using a custom comparison predicate.

Declaration

public static IEnumerable<TSource> SortByReference<TSource, TOrder>(this IEnumerable<TSource> source, IEnumerable<TOrder> orderReference, Func<TSource, TOrder, bool> comparisonPredicate)

Parameters

Type	Name	Description
IEnumerable<TSource>	source	The source collection to be sorted.
IEnumerable<TOrder>	orderReference	The reference collection that defines the desired order.
Func<TSource, TOrder, bool>	comparisonPredicate	A custom comparison predicate that takes elements from both collections and returns a boolean indicating their relative order.

Returns

Type	Description
IEnumerable<TSource>	A new IEnumerable<TSource> sorted based on the custom comparison predicate.

Type Parameters

Name	Description
TSource	The type of elements in the source collection.
TOrder	The type of elements in the reference collection.

Remarks

This method sorts the source collection based on the order of elements in the reference collection.

It allows you to specify a custom comparison predicate that determines the sorting order based on elements from both collections.

If a key in the source collection cannot be found in the orderReference collection, it is placed at the end of the sorted result.

TakeAsync<T>(IAsyncEnumerable<T>, int)

Declaration

public static IAsyncEnumerable<T> TakeAsync<T>(this IAsyncEnumerable<T> source, int count)

Parameters

Type	Name	Description
IAsyncEnumerable<T>	source
int	count

Returns

Type	Description
IAsyncEnumerable<T>

Type Parameters

Name	Description
T

ToListAsync<T>(IAsyncEnumerable<T>)

Declaration

public static Task<List<T>> ToListAsync<T>(this IAsyncEnumerable<T> source)

Parameters

Type	Name	Description
IAsyncEnumerable<T>	source

Returns

Type	Description
Task<List<T>>

Type Parameters

Name	Description
T

Yield<T>(T)

Yields a single item as an IEnumerable<T>.

Declaration

public static IEnumerable<T> Yield<T>(this T obj)

Parameters

Type	Name	Description
T	obj	The item to yield.

Returns

Type	Description
IEnumerable<T>	An IEnumerable<T> containing the item.

Type Parameters

Name	Description
T	The type of the item.