Class CollectionsExtensions

Collections extension functions

Inheritance

Object

CollectionsExtensions

Inherited Members

Object.Equals(Object)

Object.Equals(Object, Object)

Object.GetHashCode()

Object.GetType()

Object.MemberwiseClone()

Object.ReferenceEquals(Object, Object)

Object.ToString()

Namespace: XData.Extensions

Assembly: XData.docfx.dll

Syntax

public static class CollectionsExtensions

Methods

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AsEnum<T>(T)

Returns single item enumerable

Declaration

public static IEnumerable<T> AsEnum<T>(this T item)

Parameters

Type	Name	Description
T	item	Item

Returns

Type	Description
IEnumerable<T>	Single item enumerable

Type Parameters

Name	Description
T	Item type

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Clear<T>(List<T>, Action<T>)

Clear list content with action call on every element

Declaration

public static void Clear<T>(this List<T> list, Action<T> action)

Parameters

Type	Name	Description
List<T>	list	List
Action<T>	action	Action

Type Parameters

Name	Description
T	List element type

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GetOrAdd<T>(IList<T>, Func<T, Boolean>, Func<T>)

Returns first found element by predicate or add selector result and return it

Declaration

public static T GetOrAdd<T>(this IList<T> list, Func<T, bool> predicate, Func<T> selector)

Parameters

Type	Name	Description
IList<T>	list	List
Func<T, Boolean>	predicate	Find element predicate
Func<T>	selector	Create element logic

Returns

Type	Description
T	Found or crested element

Type Parameters

Name	Description
T	Element type

Exceptions

Type	Condition
XDataRuntimeException	Argument is null

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HasSameValuesAs(ICollection<TaggedValue>, ICollection<TaggedValue>)

Dictionary comparison test

Declaration

public static bool HasSameValuesAs(this ICollection<TaggedValue> source, ICollection<TaggedValue> other)

Parameters

Type	Name	Description
ICollection<TaggedValue>	source	Source dictionary
ICollection<TaggedValue>	other	Matched dictionary

Returns

Type	Description
Boolean

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HasSameValuesAs<TKey, TValue>(ICollection<KeyValuePair<TKey, TValue>>, ICollection<KeyValuePair<TKey, TValue>>)

Dictionary comparison test

Declaration

public static bool HasSameValuesAs<TKey, TValue>(this ICollection<KeyValuePair<TKey, TValue>> source, ICollection<KeyValuePair<TKey, TValue>> other)
    where TValue : IComparable

Parameters

Type	Name	Description
ICollection<KeyValuePair<TKey, TValue>>	source	Source dictionary
ICollection<KeyValuePair<TKey, TValue>>	other	Matched dictionary

Returns

Type	Description
Boolean

Type Parameters

Name	Description
TKey	Type of dictionary key
TValue	Type of dictionary value

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HasSameValuesAs<TKey, TValue>(IDictionary<TKey, TValue>, IDictionary<TKey, TValue>)

Dictionary comparison test

Declaration

public static bool HasSameValuesAs<TKey, TValue>(this IDictionary<TKey, TValue> source, IDictionary<TKey, TValue> other)
    where TValue : IEquatable<TValue>

Parameters

Type	Name	Description
IDictionary<TKey, TValue>	source	Source dictionary
IDictionary<TKey, TValue>	other	Matched dictionary

Returns

Type	Description
Boolean

Type Parameters

Name	Description
TKey	Type of dictionary key
TValue	Type of dictionary value

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IsEmpty(ICollection<IComparable>)

IComparable array IsEmpty helper

Declaration

public static bool IsEmpty(this ICollection<IComparable> fields)

Parameters

Type	Name	Description
ICollection<IComparable>	fields	Array of values

Returns

Type	Description
Boolean	Any of fields is null or DBNull

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RemoveAll<TKey, TValue>(ConcurrentDictionary<TKey, TValue>, Func<TKey, Boolean>)

Remove all elements matched predicate

Declaration

public static void RemoveAll<TKey, TValue>(this ConcurrentDictionary<TKey, TValue> collection, Func<TKey, bool> predicate)

Parameters

Type	Name	Description
ConcurrentDictionary<TKey, TValue>	collection	Concurrent dictionary
Func<TKey, Boolean>	predicate	Filtering predicate

Type Parameters

Name	Description
TKey	Key type
TValue	Value type

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SetValue<TKey, T>(TKey, T)

Named value pair builder

Declaration

public static KeyValuePair<TKey, T> SetValue<TKey, T>(this TKey name, T value)

Parameters

Type	Name	Description
TKey	name	Name
T	value	Value

Returns

Type	Description
KeyValuePair<TKey, T>	Named value pair

Type Parameters

Name	Description
TKey	Key type
T	Value type

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

ToDictionary helper

Declaration

public static Dictionary<TKey, TValue> ToDictionary<TKey, TValue>(this IEnumerable<KeyValuePair<TKey, TValue>> pairs)

Parameters

Type	Name	Description
IEnumerable<KeyValuePair<TKey, TValue>>	pairs	KeyValuePair collection

Returns

Type	Description
Dictionary<TKey, TValue>	Typed Dictionary

Type Parameters

Name	Description
TKey	Dictionary key type
TValue	Dictionary value type

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ToDictionary<TKey, TValue>(IEnumerable<IGrouping<TKey, TValue>>)

ToDictionary groupings helper

Declaration

public static Dictionary<TKey, List<TValue>> ToDictionary<TKey, TValue>(this IEnumerable<IGrouping<TKey, TValue>> groupings)

Parameters

Type	Name	Description
IEnumerable<IGrouping<TKey, TValue>>	groupings	Groupings

Returns

Type	Description
Dictionary<TKey, List<TValue>>	Typed Dictionary

Type Parameters

Name	Description
TKey	Dictionary key type
TValue	Dictionary value type

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ToSortedList<TKey, TValue>(IEnumerable<KeyValuePair<TKey, TValue>>)

ToSortedList helper

Declaration

public static SortedList<TKey, TValue> ToSortedList<TKey, TValue>(this IEnumerable<KeyValuePair<TKey, TValue>> pairs)
    where TKey : IComparable

Parameters

Type	Name	Description
IEnumerable<KeyValuePair<TKey, TValue>>	pairs	KeyValuePair collection

Returns

Type	Description
SortedList<TKey, TValue>	Typed SortedList

Type Parameters

Name	Description
TKey	Dictionary key type
TValue	Dictionary value type

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ToSortedList<TKey, TValue>(IEnumerable<IGrouping<TKey, TValue>>)

ToSortedList groupings helper

Declaration

public static SortedList<TKey, List<TValue>> ToSortedList<TKey, TValue>(this IEnumerable<IGrouping<TKey, TValue>> groupings)
    where TKey : IComparable

Parameters

Type	Name	Description
IEnumerable<IGrouping<TKey, TValue>>	groupings	Groupings

Returns

Type	Description
SortedList<TKey, List<TValue>>	Typed SortedList

Type Parameters

Name	Description
TKey	SortedList key type
TValue	SortedList value type

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ToSortedSet<T>(IEnumerable<T>, IComparer<T>)

ToSortedSet helper

Declaration

public static SortedSet<T> ToSortedSet<T>(this IEnumerable<T> source, IComparer<T> comparer = null)

Parameters

Type	Name	Description
IEnumerable<T>	source	Source sequence
IComparer<T>	comparer	Source type comparer

Returns

Type	Description
SortedSet<T>	Typed SortedSet

Type Parameters

Name	Description
T	SortedSet type

Remarks

If comparer is not set GetInstance() used

WARNING! To use Indexer<T> one of IComparable<T> properties of source type mast be marked by IndexAttribute

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TryGetValue<TKey, TValue>(IEnumerable<KeyValuePair<TKey, TValue>>, TKey)

Try get value helper

Declaration

public static object TryGetValue<TKey, TValue>(this IEnumerable<KeyValuePair<TKey, TValue>> source, TKey key)
    where TKey : IEquatable<TKey>

Parameters

Type	Name	Description
IEnumerable<KeyValuePair<TKey, TValue>>	source	Sequence of key value pairs
TKey	key	Key value

Returns

Type	Description
Object

Type Parameters

Name	Description
TKey	Key type
TValue	Value type