gohmiaoyu/MoreLINQ

Extensions to LINQ to Objects

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.

Overview of Operators

Operator	Summary
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
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	Returns true when the number of elements in the given sequence is greater than or equal to the given integer. This method throws an exception if the given integer is negative
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
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.
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.
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.
Fold	Returns the result of applying a function to a sequence of 1 element. This method has 4 overloads.
ForEach	Immediately executes the given action on each element in the source sequence. This method has 2 overloads.
FullGroupJoin	Performs a Full Group Join between the and sequences. This method has 2 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	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.
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
Partition	Partitions a sequence into equal-sized partitions. This method has 2 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 specific sequences times
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.
Segment	Divides a sequence into multiple sequences by using a segment detector based on the original sequence. This method has 3 overloads.
SingleOrFallback	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
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.
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.
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.
ToHashSet	Returns a of the source items using the default equality comparer for the type. This method has 2 overloads.
Trace	Traces the elements of a source sequence for diagnostics. This method has 3 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.