Class CollectionExtensions

Namespace

Cratis.Collections

Assembly

Cratis.Fundamentals.dll

Provides a set of extension methods for different collection and enumerable types.

public static class CollectionExtensions

Inheritance

object

CollectionExtensions

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Methods

Combine<TKey, TElement>(IEnumerable<ILookup<TKey, TElement>>)

Combines multiple lookups into a single lookup.

public static ILookup<TKey, TElement> Combine<TKey, TElement>(this IEnumerable<ILookup<TKey, TElement>> lookups)

Parameters

lookups IEnumerable<ILookup<TKey, TElement>>

A collection of lookups to combine.

Returns

ILookup<TKey, TElement>

A single lookup which takes a key into all values with this key in all incoming lookups.

Type Parameters

TKey

The type of the keys.

TElement

The type of the elements.

CountElements(IEnumerable)

Count number of items from an enumerable.

[UnconditionalSuppressMessage("Trimming", "IL2072", Justification = "The enumerable's runtime type implements IEnumerable<> which is a BCL interface always preserved.")]
[UnconditionalSuppressMessage("Trimming", "IL2075", Justification = "IEnumerable<> interface is a BCL type whose members are preserved by the runtime.")]
[UnconditionalSuppressMessage("AOT", "IL2060", Justification = "MakeGenericMethod is called on Enumerable.Count which is a well-known BCL method.")]
[RequiresDynamicCode("Uses MakeGenericMethod to invoke Enumerable.Count<T> at runtime.")]
public static int CountElements(this IEnumerable enumerable)

Parameters

enumerable IEnumerable

Enumerable to count.

Returns

int

The number of items it enumerates.

Remarks

This method will look for more concrete types and leverage the fastest way to get the count without having to enumerate it. If no other options are available, it will enumerate it.

ForEach<T>(IEnumerable<T>, Action<T>)

Enumerate an enumerable and call the given Action for each item.

public static void ForEach<T>(this IEnumerable<T> enumerable, Action<T> action)

Parameters

enumerable IEnumerable<T>

IEnumerable<T> to enumerate.

action Action<T>

Action<T> to call for each item.

Type Parameters

T

Item type.

ToObjectArray(IEnumerable)

Converts an enumerable to an array of objects.

public static object[] ToObjectArray(this IEnumerable enumerable)

Parameters

enumerable IEnumerable

Enumerable to convert.

Returns

object[]

Array of objects.