IEnumerableExtensions¶

General-purpose LINQ gap-fillers: eager iteration, string-joining, membership testing, trailing-item selection, keyed distinct, and full/left outer joins. (BR-039, BR-085) through BR-088

Purpose¶

General-purpose LINQ gap-fillers: eager iteration, string-joining, membership testing, trailing-item selection, keyed distinct, and full/left outer joins. (BR-039, BR-085) through BR-088

Context¶

Namespace: SAIF.Common.Extensions
Assembly/package: SAIF.Framework.Common

Public members¶

Member	Signature	Purpose
ForEach(this IEnumerable source, Action action)	`public static void ForEach<T>(this IEnumerable<T> source, Action<T> action)`	Eagerly invokes `action` for every element of `source`. (BR-039)
ToStringAll(this IEnumerable source, string separator)	`public static string ToStringAll<T>(this IEnumerable<T> source, string separator)`	Joins each element's `ToString()` with `separator`. (BR-039, BR-085)
ToStringAll(this IEnumerable source, string separator, Func function)	`public static string ToStringAll<T>(this IEnumerable<T> source, string separator, Func<T,string> function)`	Joins each element's custom string projection with `separator`. (BR-039, BR-085)
IsIn(this T value, params T[] set)	`public static bool IsIn<T>(this T value, params T[] set)`	Tests whether `value` is a member of the supplied `set`.
TakeFromEnd(this IEnumerable source, int count)	`public static IEnumerable<T> TakeFromEnd<T>(this IEnumerable<T> source, int count)`	Returns the trailing `count` elements, preserving their original relative order. (BR-086)
Distinct(this IEnumerable source, Func keySelector)	`public static IEnumerable<TSource> Distinct<TSource,TKey>(this IEnumerable<TSource> source, Func<TSource,TKey> keySelector)`	Returns the first element for each distinct key, a "distinct-by" LINQ does not provide natively. (BR-087)
None(this IEnumerable source, Func predicate)	`public static bool None<TSource>(this IEnumerable<TSource> source, Func<TSource,bool> predicate)`	The negation of `Any(predicate)`.
ToLowerAll(this IEnumerable source)	`public static IEnumerable<string> ToLowerAll(this IEnumerable<string> source)`	Lower-cases every string in the sequence.
FullOuterGroupJoin(this IEnumerable a, IEnumerable b, Func selectKeyA, Func selectKeyB, Func<TA,IEnumerable,TKey,TResult> projection, TA defaultA, TB defaultB, IEqualityComparer comparer)	`public static IEnumerable<TResult> FullOuterGroupJoin<TA,TB,TKey,TResult>(this IEnumerable<TA> a, IEnumerable<TB> b, Func<TA,TKey> selectKeyA, Func<TB,TKey> selectKeyB, Func<TA,IEnumerable<TB>,TKey,TResult> projection, TA defaultA = default(TA), TB defaultB = default(TB), IEqualityComparer<TKey> comparer = null)`	Full outer group-join over two sequences, substituting the supplied defaults where one side has no match. (BR-088)
FullOuterJoin(this IEnumerable a, IEnumerable b, Func selectKeyA, Func selectKeyB, Func projection, TA defaultA, TB defaultB, IEqualityComparer comparer)	`public static IEnumerable<TResult> FullOuterJoin<TA,TB,TKey,TResult>(this IEnumerable<TA> a, IEnumerable<TB> b, Func<TA,TKey> selectKeyA, Func<TB,TKey> selectKeyB, Func<TA,TB,TKey,TResult> projection, TA defaultA = default(TA), TB defaultB = default(TB), IEqualityComparer<TKey> comparer = null)`	Full outer join over two sequences, substituting the supplied defaults where one side has no match. (BR-088)
LeftOuterJoin(this IEnumerable a, IEnumerable b, Func selectKeyA, Func selectKeyB, Func projection, TB defaultB, IEqualityComparer comparer)	`public static IEnumerable<TResult> LeftOuterJoin<TA,TB,TKey,TResult>(this IEnumerable<TA> a, IEnumerable<TB> b, Func<TA,TKey> selectKeyA, Func<TB,TKey> selectKeyB, Func<TA,TB,TKey,TResult> projection, TB defaultB = default(TB), IEqualityComparer<TKey> comparer = null)`	Left outer join keyed only on the left sequence's keys, substituting `defaultB` where the right side has no match. (BR-088)

Sources¶

Common/SAIF.Common/Extensions/IEnumerableExtensions.cs