EnumerableExtensions

Assembly: ServiceStack.Common.dll

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Declaration

public static class EnumerableExtensions

Methods

IsEmpty<T>(ICollection<T>)

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Declaration

public static bool IsEmpty<T>(this ICollection<T> collection)

Returns

System.Boolean

Parameters

Type	Name
System.Collections.Generic.ICollection<<T>>	collection

Type Parameters

• T

IsEmpty<T>(T[])

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Declaration

public static bool IsEmpty<T>(this T[] collection)

Returns

System.Boolean

Parameters

Type	Name
<T>[]	collection

Type Parameters

• T

ToHashSet<T>(IEnumerable<T>)

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Declaration

[Obsolete("Use ToSet() or 'using System.Linq;'")]
public static HashSet<T> ToHashSet<T>(this IEnumerable<T> items)

Returns

System.Collections.Generic.HashSet<<T>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	items

Type Parameters

• T

ToSet<T>(IEnumerable<T>)

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Declaration

public static HashSet<T> ToSet<T>(this IEnumerable<T> items)

Returns

System.Collections.Generic.HashSet<<T>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	items

Type Parameters

• T

ToSet<T>(IEnumerable<T>, IEqualityComparer<T>)

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Declaration

public static HashSet<T> ToSet<T>(this IEnumerable<T> items, IEqualityComparer<T> comparer)

Returns

System.Collections.Generic.HashSet<<T>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	items
System.Collections.Generic.IEqualityComparer<<T>>	comparer

Type Parameters

• T

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

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Declaration

public static void Each<T>(this IEnumerable<T> values, Action<T> action)

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	values
System.Action<<T>>	action

Type Parameters

• T

Each<T>(IEnumerable<T>, Action<Int32, T>)

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Declaration

public static void Each<T>(this IEnumerable<T> values, Action<int, T> action)

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	values
System.Action<System.Int32,<T>>	action

Type Parameters

• T

Each<TKey, TValue>(IDictionary<TKey, TValue>, Action<TKey, TValue>)

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Declaration

public static void Each<TKey, TValue>(this IDictionary<TKey, TValue> map, Action<TKey, TValue> action)

Parameters

Type	Name
System.Collections.Generic.IDictionary<<TKey>,<TValue>>	map
System.Action<<TKey>,<TValue>>	action

Type Parameters

• TKey
• TValue

Map<To, From>(IEnumerable<From>, Func<From, To>)

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Declaration

public static List<To> Map<To, From>(this IEnumerable<From> items, Func<From, To> converter)

Returns

System.Collections.Generic.List<<To>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<From>>	items
System.Func<<From>,<To>>	converter

Type Parameters

• To
• From

Map<To>(IEnumerable, Func<Object, To>)

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Declaration

public static List<To> Map<To>(this IEnumerable items, Func<object, To> converter)

Returns

System.Collections.Generic.List<<To>>

Parameters

Type	Name
System.Collections.IEnumerable	items
System.Func<System.Object,<To>>	converter

Type Parameters

• To

ToObjects<T>(IEnumerable<T>)

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Declaration

public static List<object> ToObjects<T>(this IEnumerable<T> items)

Returns

System.Collections.Generic.List<System.Object>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	items

Type Parameters

• T

FirstNonDefaultOrEmpty(IEnumerable<String>)

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Declaration

public static string FirstNonDefaultOrEmpty(this IEnumerable<string> values)

Returns

System.String

Parameters

Type	Name
System.Collections.Generic.IEnumerable<System.String>	values

FirstNonDefault<T>(IEnumerable<T>)

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Declaration

public static T FirstNonDefault<T>(this IEnumerable<T> values)

Returns

<T>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	values

Type Parameters

• T

EquivalentTo(Byte[], Byte[])

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Declaration

public static bool EquivalentTo(this byte[] bytes, byte[] other)

Returns

System.Boolean

Parameters

Type	Name
System.Byte[]	bytes
System.Byte[]	other

EquivalentTo<T>(T[], T[], Func<T, T, Boolean>)

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Declaration

public static bool EquivalentTo<T>(this T[] array, T[] otherArray, Func<T, T, bool> comparer = null)

Returns

System.Boolean

Parameters

Type	Name
<T>[]	array
<T>[]	otherArray
System.Func<<T>,<T>,System.Boolean>	comparer

Type Parameters

• T

EquivalentTo<T>(IEnumerable<T>, IEnumerable<T>, Func<T, T, Boolean>)

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Declaration

public static bool EquivalentTo<T>(this IEnumerable<T> thisList, IEnumerable<T> otherList, Func<T, T, bool> comparer = null)

Returns

System.Boolean

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	thisList
System.Collections.Generic.IEnumerable<<T>>	otherList
System.Func<<T>,<T>,System.Boolean>	comparer

Type Parameters

• T

EquivalentTo<K, V>(IDictionary<K, V>, IDictionary<K, V>, Func<V, V, Boolean>)

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Declaration

public static bool EquivalentTo<K, V>(this IDictionary<K, V> a, IDictionary<K, V> b, Func<V, V, bool> comparer = null)

Returns

System.Boolean

Parameters

Type	Name
System.Collections.Generic.IDictionary<<K>,<V>>	a
System.Collections.Generic.IDictionary<<K>,<V>>	b
System.Func<<V>,<V>,System.Boolean>	comparer

Type Parameters

• K
• V

BatchesOf<T>(IEnumerable<T>, Int32)

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Declaration

public static IEnumerable<T[]> BatchesOf<T>(this IEnumerable<T> sequence, int batchSize)

Returns

System.Collections.Generic.IEnumerable<<T>[]>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	sequence
System.Int32	batchSize

Type Parameters

• T

ToSafeDictionary<T, TKey>(IEnumerable<T>, Func<T, TKey>)

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Declaration

public static Dictionary<TKey, T> ToSafeDictionary<T, TKey>(this IEnumerable<T> list, Func<T, TKey> expr)

Returns

System.Collections.Generic.Dictionary<<TKey>,<T>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	list
System.Func<<T>,<TKey>>	expr

Type Parameters

• T
• TKey

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

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Declaration

public static Dictionary<TKey, TValue> ToDictionary<T, TKey, TValue>(this IEnumerable<T> list, Func<T, KeyValuePair<TKey, TValue>> map)

Returns

System.Collections.Generic.Dictionary<<TKey>,<TValue>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	list
System.Func<<T>,System.Collections.Generic.KeyValuePair<<TKey>,<TValue>>>	map

Type Parameters

• T
• TKey
• TValue

Safe<T>(IEnumerable<T>)

Return T[0] when enumerable is null, safe to use in enumerations like foreach

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Declaration

public static IEnumerable<T> Safe<T>(this IEnumerable<T> enumerable)

Returns

System.Collections.Generic.IEnumerable<<T>>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	enumerable

Type Parameters

• T

Safe(IEnumerable)

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Declaration

public static IEnumerable Safe(this IEnumerable enumerable)

Returns

System.Collections.IEnumerable

Parameters

Type	Name
System.Collections.IEnumerable	enumerable

AllAsync<T>(IEnumerable<T>, Func<T, Task<Boolean>>)

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Declaration

public static async Task<bool> AllAsync<T>(this IEnumerable<T> source, Func<T, Task<bool>> predicate)

Returns

System.Threading.Tasks.Task<System.Boolean>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	source
System.Func<<T>,System.Threading.Tasks.Task<System.Boolean>>	predicate

Type Parameters

• T

AllAsync<T>(IEnumerable<Task<T>>, Func<T, Boolean>)

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Declaration

public static async Task<bool> AllAsync<T>(this IEnumerable<Task<T>> source, Func<T, bool> predicate)

Returns

System.Threading.Tasks.Task<System.Boolean>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<System.Threading.Tasks.Task<<T>>>	source
System.Func<<T>,System.Boolean>	predicate

Type Parameters

• T

AnyAsync<T>(IEnumerable<T>, Func<T, Task<Boolean>>)

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Declaration

public static async Task<bool> AnyAsync<T>(this IEnumerable<T> source, Func<T, Task<bool>> predicate)

Returns

System.Threading.Tasks.Task<System.Boolean>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<<T>>	source
System.Func<<T>,System.Threading.Tasks.Task<System.Boolean>>	predicate

Type Parameters

• T

AnyAsync<T>(IEnumerable<Task<T>>, Func<T, Boolean>)

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Declaration

public static async Task<bool> AnyAsync<T>(this IEnumerable<Task<T>> source, Func<T, bool> predicate)

Returns

System.Threading.Tasks.Task<System.Boolean>

Parameters

Type	Name
System.Collections.Generic.IEnumerable<System.Threading.Tasks.Task<<T>>>	source
System.Func<<T>,System.Boolean>	predicate

Type Parameters

• T

AllKeysWithDefaultValues(IEnumerable)

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Declaration

public static List<string> AllKeysWithDefaultValues(IEnumerable collection)

Returns

System.Collections.Generic.List<System.String>

Parameters

Type	Name
System.Collections.IEnumerable	collection

FirstElementType(IEnumerable, String)

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Declaration

public static Type FirstElementType(IEnumerable collection, string key)

Returns

System.Type

Parameters

Type	Name
System.Collections.IEnumerable	collection
System.String	key

CombineDistinct<T>(T[], T[][])

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Declaration

public static T[] CombineDistinct<T>(this T[] original, params T[][] others)

Returns

<T>[]

Parameters

Type	Name
<T>[]	original
<T>[][]	others

Type Parameters

• T

CombineSet<T>(T[], T[][])

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Declaration

public static HashSet<T> CombineSet<T>(this T[] original, params T[][] others)

Returns

System.Collections.Generic.HashSet<<T>>

Parameters

Type	Name
<T>[]	original
<T>[][]	others

Type Parameters

• T