MoreLINQ
LINQ to Objects is missing a few desirable features.
This project enhances LINQ to Objects with extra methods, in a manner which keeps to the spirit of LINQ.
MoreLINQ is available for download and installation as NuGet packages.
Documentation for the stable and beta releases can be found at morelinq.github.io.
Operators
Acquire
Ensures that a source sequence of objects are all acquired successfully. If the acquisition of any one fails then those successfully acquired till that point are disposed
AggregateRight
Applies a right-associative accumulator function over a sequence. This operator is the right-associative version of the Aggregate LINQ operator.
This method has 3 overloads.
Assert
Asserts that all elements of a sequence meet a given condition otherwise throws an object.
This method has 2 overloads.
AssertCount
Asserts that a source sequence contains a given count of elements.
This method has 2 overloads.
AtLeast
Determines whether or not the number of elements in the sequence is greater than or equal to the given integer.
AtMost
Determines whether or not the number of elements in the sequence is lesser than or equal to the given integer.
Batch
Batches the source sequence into sized buckets.
This method has 2 overloads.
Cartesian
Returns the Cartesian product of two sequences by combining each element of the first set with each in the second and applying the user=define projection to the pair
Concat
Returns a sequence consisting of the head element and the given tail elements.
This method has 2 overloads.
Consume
Completely consumes the given sequence. This method uses immediate execution, and doesn't store any data during execution
CountBetween
Determines whether or not the number of elements in the sequence is between an inclusive range of minimum and maximum integers.
CountBy
Applies a key-generating function to each element of a sequence and returns a sequence of unique keys and their number of occurrences in the original sequence.
This method has 2 overloads.
DistinctBy
Returns all distinct elements of the given source, where "distinctness" is determined via a projection and the default equality comparer for the projected type.
This method has 2 overloads.
EndsWith
Determines whether the end of the first sequence is equivalent to the second sequence.
This method has 2 overloads.
EquiZip
Returns a projection of tuples, where each tuple contains the N-th element from each of the argument sequences.
This method has 3 overloads.
Exactly
Determines whether or not the number of elements in the sequence is equals to the given integer.
ExceptBy
Returns the set of elements in the first sequence which aren't in the second sequence, according to a given key selector.
This method has 2 overloads.
Exclude
Excludes elements from a sequence starting at a given index
FallbackIfEmpty
Returns the elements of a sequence and falls back to another if the original sequence is empty.
FillBackward
Returns a sequence with each null reference or value in the source replaced with the following non-null reference or value in that sequence.
This method has 3 overloads.
FillForward
Returns a sequence with each null reference or value in the source replaced with the previous non-null reference or value seen in that sequence.
This method has 3 overloads.
Fold
Returns the result of applying a function to a sequence with 1 to 16 elements.
This method has 16 overloads.
ForEach
Immediately executes the given action on each element in the source sequence.
This method has 2 overloads.
From
Returns a sequence containing the values resulting from invoking (in order) each function in the source sequence of functions.
This method has 4 overloads.
FullGroupJoin
Performs a Full Group Join between the and sequences.
This method has 4 overloads.
Generate
Returns a sequence of values consecutively generated by a generator function
GenerateByIndex
Returns a sequence of values based on indexes
GroupAdjacent
Groups the adjacent elements of a sequence according to a specified key selector function.
This method has 4 overloads.
Incremental
Use Pairwise
instead, which is identical to Incremental
. Incremental
will be removed in a future version.
Computes an incremental value between every adjacent element in a sequence: {N,N+1}, {N+1,N+2}, .
This method has 2 overloads.
Index
Returns a sequence of where the key is the zero-based index of the value in the source sequence.
This method has 2 overloads.
Interleave
Interleaves the elements of two or more sequences into a single sequence, skipping sequences as they are consumed.
This method has 2 overloads.
Lag
Produces a projection of a sequence by evaluating pairs of elements separated by a negative offset.
This method has 2 overloads.
Lead
Produces a projection of a sequence by evaluating pairs of elements separated by a positive offset.
This method has 2 overloads.
MaxBy
Returns the maximal element of the given sequence, based on the given projection.
This method has 2 overloads.
MinBy
Returns the minimal element of the given sequence, based on the given projection.
This method has 2 overloads.
NestedLoops
Produces a sequence from an action based on the dynamic generation of N nested loops who iteration counts are defined by
OrderBy
Sorts the elements of a sequence in a particular direction (ascending, descending) according to a key.
This method has 2 overloads.
OrderedMerge
Merges two ordered sequences into one. Where the elements equal in both sequences, the element from the first sequence is returned in the resulting sequence.
This method has 7 overloads.
Pad
Pads a sequence with default values if it is narrower (shorter in length) than a given width.
This method has 3 overloads.
PadStart
Pads a sequence with default values in the beginning if it is narrower (shorter in length) than a given width.
This method has 3 overloads.
Pairwise
Returns a sequence resulting from applying a function to each element in the source sequence and its predecessor, with the exception of the first element which is only returned as the predecessor of the second element
PartialSort
Combines OrderBy
(where element is key) and Take
in a single operation.
PartialSortBy
Combines OrderBy
and Take
in a single operation.
Partition
Partitions a sequence by a predicate, or a grouping by Boolean keys or up to 3 sets of keys.
This method has 10 overloads.
Permutations
Generates a sequence of lists that represent the permutations of the original sequence
Pipe
Executes the given action on each element in the source sequence and yields it
Prepend
Prepends a single value to a sequence
PreScan
Performs a pre-scan (exclusive prefix sum) on a sequence of elements
Random
Returns an infinite sequence of random integers using the standard .NET random number generator.
This method has 6 overloads.
RandomDouble
Returns an infinite sequence of random double values between 0.0 and 1.0.
This method has 2 overloads.
RandomSubset
Returns a sequence of a specified size of random elements from the original sequence.
This method has 2 overloads.
Rank
Ranks each item in the sequence in descending ordering using a default comparer.
This method has 2 overloads.
RankBy
Ranks each item in the sequence in descending ordering by a specified key using a default comparer.
This method has 2 overloads.
Repeat
Repeats the sequence indefinitely or a specific number of times.
This method has 2 overloads.
RunLengthEncode
Run-length encodes a sequence by converting consecutive instances of the same
element into a KeyValuePair<T, int>
representing the item and its occurrence
count.
This method has 2 overloads.
Scan
Peforms a scan (inclusive prefix sum) on a sequence of elements.
This method has 2 overloads.
ScanRight
Peforms a right-associative scan (inclusive prefix) on a sequence of elements. This operator is the right-associative version of the Scan operator.
This method has 2 overloads.
Segment
Divides a sequence into multiple sequences by using a segment detector based on the original sequence.
This method has 3 overloads.
Sequence
Generates a sequence of integral numbers within the (inclusive) specified range.
This method has 2 overloads.
SingleOrFallback
Consider using FallbackIfEmpty
instead. SingleOrFallback
may be removed in
a future version. For more information, see issue #122.
Returns the single element in the given sequence, or the result of executing a fallback delegate if the sequence is empty. This method throws an exception if there is more than one element in the sequence
SkipLast
Bypasses a specified number of elements at the end of the sequence.
SkipUntil
Skips items from the input sequence until the given predicate returns true when applied to the current source item; that item will be the last skipped
Slice
Extracts elements from a sequence at a particular zero-based starting index
SortedMerge
Merges two or more sequences that are in a common order (either ascending or descending) into a single sequence that preserves that order.
This method has 2 overloads.
Split
Splits the source sequence by a separator.
This method has 12 overloads.
StartsWith
Determines whether the beginning of the first sequence is equivalent to the second sequence.
This method has 2 overloads.
Subsets
Returns a sequence of representing all of the subsets of any size that are part of the original sequence.
This method has 2 overloads.
TagFirstLast
Returns a sequence resulting from applying a function to each element in the source sequence with additional parameters indicating whether the element is the first and/or last of the sequence
TakeEvery
Returns every N-th element of a source sequence
TakeLast
Returns a specified number of contiguous elements from the end of a sequence
TakeUntil
Returns items from the input sequence until the given predicate returns true when applied to the current source item; that item will be the last returned
ThenBy
Performs a subsequent ordering of elements in a sequence in a particular direction (ascending, descending) according to a key.
This method has 2 overloads.
ToArrayByIndex
Creates an array from an IEnumerable where a function is used to determine the index at which an element will be placed in the array.
This method has 6 overloads.
ToDataTable
Appends elements in the sequence as rows of a given object with a set of lambda expressions specifying which members (property or field) of each element in the sequence will supply the column values.
This method has 4 overloads.
ToDelimitedString
Creates a delimited string from a sequence of values. The delimiter used depends on the current culture of the executing thread.
This method has 30 overloads.
ToDictionary
Creates a dictionary from a sequence of key-value pair elements or tuples of 2.
This method has 4 overloads.
ToHashSet
Returns a of the source items using the default equality comparer for the type.
This method has 2 overloads.
ToLookup
Creates a lookup from a sequence of key-value pair elements or tuples of 2.
This method has 4 overloads.
TraverseBreadthFirst
Traverses a tree in a breadth-first fashion, starting at a root node and using a user-defined function to get the children at each node of the tree.
TraverseDepthFirst
Traverses a tree in a depth-first fashion, starting at a root node and using a user-defined function to get the children at each node of the tree.
Trace
Traces the elements of a source sequence for diagnostics.
This method has 3 overloads.
Unfold
Returns a sequence generated by applying a state to the generator function, and from its result, determines if the sequence should have a next element and its value, and the next state in the recursive call.
This method has 2 overloads.
Windowed
Processes a sequence into a series of subsequences representing a windowed subset of the original
ZipLongest
Returns a projection of tuples, where each tuple contains the N-th element from each of the argument sequences
ZipShortest
Returns a projection of tuples, where each tuple contains the N-th element from each of the argument sequences.
This method has 3 overloads.