Overview

The Linq.Next package provides you with a useful additions to the Linq.

Reference

namespace System.Linq; public static class LinqNext { // Split // Split the items into segments (the separator is excluded) // Example: [false, false, false], true, [false, false, false] public static IEnumerable<T[]> Split<T>(this IEnumerable<T> source, Func<T, bool> separatorPredicate); public static IEnumerable<TResult[]> Split<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); public static IEnumerable<IList<TResult>> FastSplit<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); // Split/Before // Split the items into segments (the separator is included at the beginning of segment) // Example: [false, false, false], [true, false, false] public static IEnumerable<T[]> SplitBefore<T>(this IEnumerable<T> source, Func<T, bool> separatorPredicate); public static IEnumerable<TResult[]> SplitBefore<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); public static IEnumerable<IList<TResult>> FastSplitBefore<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); // Split/After // Split the items into segments (the separator is included at the end of segment) // Example: [false, false, true], [false, false, false] public static IEnumerable<T[]> SplitAfter<T>(this IEnumerable<T> source, Func<T, bool> separatorPredicate); public static IEnumerable<TResult[]> SplitAfter<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); public static IEnumerable<IList<TResult>> FastSplitAfter<T, TResult>(this IEnumerable<T> source, Func<T, bool> separatorPredicate, Func<T, TResult> resultSelector); // Slice // Slice the items into slices // Example: [true, true, true], [false, true, true] public static IEnumerable<T[]> Slice<T>(this IEnumerable<T> source, Func<T, IList<T>, bool> belongsToSlicePredicate); public static IEnumerable<TResult[]> Slice<T, TResult>(this IEnumerable<T> source, Func<T, IList<TResult>, bool> belongsToSlicePredicate, Func<T, TResult> resultSelector); public static IEnumerable<IList<TResult>> FastSlice<T, TResult>(this IEnumerable<T> source, Func<T, IList<TResult>, bool> belongsToSlicePredicate, Func<T, TResult> resultSelector); // Unflatten // Unflatten the items into key-values pairs // Example: true: [false, false, false], true: [false, false, false] // Example: key: [value, value, value], key: [value, value, value] public static IEnumerable<(Option<T> Key, T[] Values)> Unflatten<T>(this IEnumerable<T> source, Func<T, bool> keyPredicate); public static IEnumerable<(Option<TKey> Key, TValue[] Values)> Unflatten<T, TKey, TValue>(this IEnumerable<T> source, Func<T, bool> keyPredicate, Func<T, TKey> keySelector, Func<T, TValue> valueSelector); public static IEnumerable<(Option<TKey> Key, IList<TValue> Values)> FastUnflatten<T, TKey, TValue>(this IEnumerable<T> source, Func<T, bool> keyPredicate, Func<T, TKey> keySelector, Func<T, TValue> valueSelector); // With/Prev public static IEnumerable<(T Value, Option<T> Prev)> WithPrev<T>(this IEnumerable<T> source); // With/Next public static IEnumerable<(T Value, Option<T> Next)> WithNext<T>(this IEnumerable<T> source); // With/Prev-Next public static IEnumerable<(T Value, Option<T> Prev, Option<T> Next)> WithPrevNext<T>(this IEnumerable<T> source); // Tag/First public static IEnumerable<(T Value, bool IsFirst)> TagFirst<T>(this IEnumerable<T> source); // Tag/Last public static IEnumerable<(T Value, bool IsLast)> TagLast<T>(this IEnumerable<T> source); // Tag/First-Last public static IEnumerable<(T Value, bool IsFirst, bool IsLast)> TagFirstLast<T>(this IEnumerable<T> source); // CompareTo public static void CompareTo<T>(this IEnumerable<T> actual, IEnumerable<T> expected, out T[] missing, out T[] extra); }