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This library is a continuous effort to implement LINQ using latest features of TypeScript and JavaScript languages (For ES5 compatible library look at linq-es5 branch). The library is implemented in TypeScript and transpiled into JavaScript. It is distributed as a native node module. Browserified and minified standalone UMD modules are located in ./dist directory and could be used directly in compatible browsers. This library uses latest ECMAScript 2015 language specification and utilizes Iterables ([System.iterator]), JavaScript generators (function* ...), and for of loops. All relevant methods are implemented with deferred execution so no unnecessary iterations are performed. The code is backwards compatible with linq-es5 and C# implementations.
Name | Description |
---|---|
[Aggregate] (./aggregate) | Applies an accumulator function over a sequence. |
[All] (./all) | Determines whether all elements of a sequence satisfy a condition. |
[Any] (./any) | Determines whether a sequence contains any elements. |
[AsEnumerable] (./asenumerable) | Returns the input typed as Iterable. |
[Average] (./average) | Computes the average of a sequence of Decimal values. |
[Cast] (./cast) | Casts the elements of an IEnumerable to the specified type. |
[Concat] (./concat) | Concatenates two sequences. |
[Contains] (./contains) | Determines whether a sequence contains a specified element by using the default equality comparer. |
[Count] (./count) | Returns the number of elements in a sequence. |
[DefaultIfEmpty] (./defaultifempty) | Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty. |
[Distinct] (./distinct) | Returns distinct elements from a sequence by using the default equality comparer to compare values. |
[ElementAt] (./elementat) | Returns the element at a specified index in a sequence. |
[ElementAtOrDefault] (./elementatordefault) | Returns the element at a specified index in a sequence or a default value if the index is out of range. |
[Except] (./except) | Produces the set difference of two sequences by using the default equality comparer to compare values. |
[First] (./first) | Returns the first element of a sequence. |
[FirstOrDefault] (./firstordefault) | Returns the first element of a sequence, or a default value if the sequence contains no elements. |
[GroupBy] (./groupby) | Groups the elements of a sequence according to a specified key selector function. |
[GroupJoin] (./groupjoin) | Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys. |
[Intersect] (./intersect) | Produces the set intersection of two sequences by using the default equality comparer to compare values. |
[Join] (./join) | Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys. |
[Last] (./last) | Returns the last element of a sequence. |
[LastOrDefault] (./lastordefault) | Returns the last element of a sequence, or a default value if the sequence contains no elements. |
[Max] (./max) | Returns the maximum value in a sequence of Decimal values. |
[Min] (./min) | Returns the minimum value in a sequence of Decimal values. |
[OfType] (./oftype) | Filters the elements of an IEnumerable based on a specified type. |
[OrderBy] (./orderby) | Sorts the elements of a sequence in ascending order according to a key. |
[Range] (./range) | Generates a sequence of integral numbers within a specified range. |
[Repeat] (./repeat) | Generates a sequence that contains one repeated value. |
[Reverse] (./reverse) | Inverts the order of the elements in a sequence. |
[Select] (./select) | Projects each element of a sequence into a new form. |
[SelectMany] (./selectmany) | Projects each element of a sequence to an Iterable, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element. |
[SequenceEqual] (./sequenceequal) | Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. |
[Single] (./single) | Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists. |
[SingleOrDefault] (./singleordefault) | Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. |
[Skip] (./skip) | Bypasses a specified number of elements in a sequence and then returns the remaining elements. |
[SkipWhile] (./skipwhile) | Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. |
[Sum] (./sum) | Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. |
[Take] (./take) | Returns a specified number of contiguous elements from the start of a sequence. |
[TakeWhile] (./takewhile) | Returns elements from a sequence as long as a specified condition is true. |
[ThenBy] (./thenby) | Performs a subsequent ordering of the elements in a sequence in ascending order by using a specified comparer. |
[ThenByDescending] (./thenbydescending) | Performs a subsequent ordering of the elements in a sequence in descending order, according to a key. |
[ToArray] (./toarray) | Creates an array from a Iterable. |
[ToMap] (./todictionary) | Creates a Map<TKey, TValue> from an Iterable according to a specified key selector function, a comparer, and an element selector function. |
[Union] (./union) | Produces the set union of two sequences by using a specified IEqualityComparer. |
[Where] (./where) | Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function. |
[Zip] (./zip) | Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results. |