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Showing content from https://apidocs.umbraco.com/v15/csharp/api/Umbraco.Extensions.EnumerableExtensions.html below:

View Source Class EnumerableExtensions

Extensions for enumerable sources

Inheritance

System.Object

Namespace: Umbraco.Extensions Assembly: Umbraco.Core.dll Syntax
public static class EnumerableExtensions
Methods View Source ContainsAll<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)

Returns true if all items in the other collection exist in this collection

Declaration
public static bool ContainsAll<TSource>(this IEnumerable<TSource> source, IEnumerable<TSource> other)
Parameters Type Name Description IEnumerable<TSource> source IEnumerable<TSource> other Returns Type Description System.Boolean Type Parameters View Source ContainsAny<TSource>(IEnumerable<TSource>, IEnumerable<TSource>)

Returns true if the source contains any of the items in the other list

Declaration
public static bool ContainsAny<TSource>(this IEnumerable<TSource> source, IEnumerable<TSource> other)
Parameters Type Name Description IEnumerable<TSource> source IEnumerable<TSource> other Returns Type Description System.Boolean Type Parameters View Source EmptyNull<T>(Nullable<IEnumerable<T>>)

Gets a null IEnumerable as an empty IEnumerable.

Declaration
public static IEnumerable<T> EmptyNull<T>(this IEnumerable<T>? items)
Parameters Type Name Description System.Nullable<IEnumerable<T>> items Returns Type Description IEnumerable<T> Type Parameters View Source FindIndex<T>(IEnumerable<T>, Func<T, Boolean>)

Finds the index of the first item matching an expression in an enumerable.

Declaration
public static int FindIndex<T>(this IEnumerable<T> items, Func<T, bool> predicate)
Parameters Type Name Description IEnumerable<T> items

The enumerable to search.

Func<T, System.Boolean> predicate

The expression to test the items against.

Returns Type Description System.Int32

The index of the first matching item, or -1.

Type Parameters Name Description T

The type of the enumerated objects.

View Source FindIndex<T>(IEnumerable<T>, Int32, Func<T, Boolean>)

Finds the index of the first item matching an expression in an enumerable.

Declaration
public static int FindIndex<T>(this IEnumerable<T> items, int startIndex, Func<T, bool> predicate)
Parameters Type Name Description IEnumerable<T> items

The enumerable to search.

System.Int32 startIndex

The index to start at.

Func<T, System.Boolean> predicate

The expression to test the items against.

Returns Type Description System.Int32

The index of the first matching item, or -1.

Type Parameters Name Description T

The type of the enumerated objects.

View Source ForAllThatAre<TBase, TActual>(IEnumerable<TBase>, Action<TActual>) Declaration
public static IEnumerable<TBase> ForAllThatAre<TBase, TActual>(this IEnumerable<TBase> sequence, Action<TActual> projection)
    where TActual : class
Parameters Type Name Description IEnumerable<TBase> sequence Action<TActual> projection Returns Type Description IEnumerable<TBase> Type Parameters Name Description TBase TActual View Source IfNotNull<TItem>(IEnumerable<TItem>, Action<TItem>)

The if not null.

Declaration
public static void IfNotNull<TItem>(this IEnumerable<TItem> items, Action<TItem> action)
    where TItem : class
Parameters Type Name Description IEnumerable<TItem> items

The items.

Action<TItem> action

The action.

Type Parameters Name Description TItem

The type

View Source IndexOf<T>(IEnumerable<T>, T)

Finds the index of the first occurrence of an item in an enumerable.

Declaration
public static int IndexOf<T>(this IEnumerable<T> items, T item)
Parameters Type Name Description IEnumerable<T> items

The enumerable to search.

T item

The item to find.

Returns Type Description System.Int32

The index of the first matching item, or -1 if the item was not found.

Type Parameters View Source InGroupsOf<T>(Nullable<IEnumerable<T>>, Int32) Declaration
public static IEnumerable<IEnumerable<T>> InGroupsOf<T>(this IEnumerable<T>? source, int groupSize)
Parameters Type Name Description System.Nullable<IEnumerable<T>> source System.Int32 groupSize Returns Type Description IEnumerable<IEnumerable<T>> Type Parameters View Source IsCollectionEmpty<T>(Nullable<IReadOnlyCollection<T>>) Declaration
public static bool IsCollectionEmpty<T>(this IReadOnlyCollection<T>? list)
Parameters Type Name Description System.Nullable<IReadOnlyCollection<T>> list Returns Type Description System.Boolean Type Parameters View Source OfTypes<T>(IEnumerable<T>, Type[]) Declaration
public static IEnumerable<T> OfTypes<T>(this IEnumerable<T> contents, params Type[] types)
Parameters Type Name Description IEnumerable<T> contents Type[] types Returns Type Description IEnumerable<T> Type Parameters View Source OrderBy<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, Direction) Declaration
public static IOrderedEnumerable<TSource> OrderBy<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector, Direction sortOrder)
Parameters Type Name Description IEnumerable<TSource> source Func<TSource, TKey> keySelector Direction sortOrder Returns Type Description IOrderedEnumerable<TSource> Type Parameters Name Description TSource TKey View Source Range<T>(Func<Int32, T>, Int32)

Returns a sequence of length count whose elements are the result of invoking factory.

Declaration
public static IEnumerable<T> Range<T>(Func<int, T> factory, int count)
Parameters Type Name Description Func<System.Int32, T> factory

The factory.

System.Int32 count

The count.

Returns Type Description IEnumerable<T> Type Parameters View Source RemoveAll<T>(ICollection<T>, Func<T, Boolean>)

Removes all matching items from an .

Declaration
public static void RemoveAll<T>(this ICollection<T> list, Func<T, bool> predicate)
Parameters Type Name Description ICollection<T> list

The list.

Func<T, System.Boolean> predicate

The predicate.

Type Parameters View Source RemoveAll<T>(IList<T>, Func<T, Boolean>)

Removes all matching items from an .

Declaration
public static void RemoveAll<T>(this IList<T> list, Func<T, bool> predicate)
Parameters Type Name Description IList<T> list

The list.

Func<T, System.Boolean> predicate

The predicate.

Type Parameters View Source SelectByGroups<TResult, TSource>(IEnumerable<TSource>, Func<IEnumerable<TSource>, IEnumerable<TResult>>, Int32) Declaration
public static IEnumerable<TResult> SelectByGroups<TResult, TSource>(this IEnumerable<TSource> source, Func<IEnumerable<TSource>, IEnumerable<TResult>> selector, int groupSize)
Parameters Type Name Description IEnumerable<TSource> source Func<IEnumerable<TSource>, IEnumerable<TResult>> selector System.Int32 groupSize Returns Type Description IEnumerable<TResult> Type Parameters Name Description TResult TSource View Source SelectRecursive<TSource>(IEnumerable<TSource>, Func<TSource, IEnumerable<TSource>>, Int32) Declaration
public static IEnumerable<TSource> SelectRecursive<TSource>(this IEnumerable<TSource> source, Func<TSource, IEnumerable<TSource>> recursiveSelector, int maxRecusionDepth = 100)
Parameters Type Name Description IEnumerable<TSource> source Func<TSource, IEnumerable<TSource>> recursiveSelector System.Int32 maxRecusionDepth Returns Type Description IEnumerable<TSource> Type Parameters View Source SkipLast<T>(IEnumerable<T>) Declaration
public static IEnumerable<T> SkipLast<T>(this IEnumerable<T> source)
Parameters Type Name Description IEnumerable<T> source Returns Type Description IEnumerable<T> Type Parameters View Source Transform<TSource, TTarget>(IEnumerable<TSource>, Func<IEnumerable<TSource>, IEnumerable<TTarget>>)

Transforms an enumerable.

Declaration
public static IEnumerable<TTarget> Transform<TSource, TTarget>(this IEnumerable<TSource> source, Func<IEnumerable<TSource>, IEnumerable<TTarget>> transform)
Parameters Type Name Description IEnumerable<TSource> source Func<IEnumerable<TSource>, IEnumerable<TTarget>> transform Returns Type Description IEnumerable<TTarget> Type Parameters Name Description TSource TTarget View Source UnsortedSequenceEqual<T>(Nullable<IEnumerable<T>>, Nullable<IEnumerable<T>>)

Determines if 2 lists have equal elements within them regardless of how they are sorted

Declaration
public static bool UnsortedSequenceEqual<T>(this IEnumerable<T>? source, IEnumerable<T>? other)
Parameters Type Name Description System.Nullable<IEnumerable<T>> source System.Nullable<IEnumerable<T>> other Returns Type Description System.Boolean Type Parameters View Source WhereNotNull<T>(IEnumerable<T>)

Filters a sequence of values to ignore those which are null.

Declaration
public static IEnumerable<T> WhereNotNull<T>(this IEnumerable<T> coll)
    where T : class
Parameters Type Name Description IEnumerable<T> coll

The coll.

Returns Type Description IEnumerable<T> Type Parameters View Source Yield<T>(T)

Wraps this object instance into an IEnumerable{T} consisting of a single item.

Declaration
public static IEnumerable<T> Yield<T>(this T item)
Parameters Type Name Description T item

The instance that will be wrapped.

Returns Type Description IEnumerable<T>

An IEnumerable{T} consisting of a single item.

Type Parameters Name Description T

Type of the object.


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