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v6.0.0 Release notes

Synchronize changes from .net 6.

Features

  • Add type Index indicates a forward or reverse index.
  • Add type Range indicates a range between start and end Index.
  • Add new method chunk() to support slicing by a fixed number of elements.
  • Add new overloads for elementAt(Index) and elementAtOrDefault(Index) methods to support get element by forward or reverse index.
  • Add new overloads for firstOrDefault(), lastOrDefault() and singleOrDefault() methods to support return custom default value when sequence is empty.
  • Add new overloads for max(), maxBy(), min() and minBy() methods to support custom comparer.
  • Add new overloads for take(Range) method to support get elements between start and end Index.
  • Add new overloads for toMap() and toLinkedMap() methods to specify which key to keep when conflicting.

Changes

  • Modify first param type of methods exceptBy(...) and intersectBy(...) from IEnumerable<? extends TSource> to IEnumerable<? extends TKey>.

Tips

  • Now skipLast() and takeLast() methods support mutable sequence.

Links

v5.0.0 Release notes

Synchronize changes from .net 5.

Features

  • Add size() and isEmpty() methods for ICollection interface.
  • Add StringSplitOptions.TrimEntries for split() method.
  • Add zip() api to cast three sequence into a Tuple3 sequence.

Changes

  • Improve performance of method ArrayListEnumerable.toArray(Class<TSource> clazz).
  • Optimize allocation of hash sets to reduce the number of resize times. Effected methods toMap,toLinkedMap,toSet,toLinkedSet.
  • Keep first value for duplicated key. Effected methods toMap, toLinkedMap.
  • Return empty sequence instead of throw ArgumentNullException when source is null. Effected methods of, as, chars, words, lines, split.

Tips

  • In order to reduce sorting time, methods first(predicate) and firstOrDefault(predicate) after OrderedEnumerable call the predicate once per element. So don't call side-effect methods in linq. See dotnet/runtime#31554.
  • Don't reuse the lazy result of skipLast and takeLast when the source will be modified. See dotnet/runtime#42506.

Links

v3.1.0 Release notes

Features

  • Support custom debug view for any type by DebuggerDisplay, DebuggerTypeProxy annotation.

Changes

  • Rename DebugView.getDebuggerDisplay(...) to DebugView.getDebuggerDisplayText(...).
  • Rename DebugView.getDebuggerTypeProxy(...) to DebugView.getDebuggerProxyObject(...).
  • Modify debugger display for types which is cheap to count the elements.

Links

v3.0.0 Release notes

This is the first stable version available for production. It is highly recommended to upgrade to this version if you have used a previous version.

Bugs

  • Fix unsigned compare bugs.
  • Fix Lookup.ApplyResultSelector bugs.
  • Fix OrderedEnumerableRangeEnumerator not iterate maxIdx.
  • Fix EnumerablePartition error assert.
  • Fix inner enumerator of CrossJoinIterator and SelectManyIterator dispose twice.
  • Fix not check selector param for sum with selector.
  • Fix bug with select(...).count() on an IPartition.
  • Fix bug with skip, take on an empty IOrderedEnumerable.
  • Fix union and unionBy not close when break iterate.

Features

  • Add zip Tuple api.
  • Add support compatible stream for IEnumerable.
  • Add api toLinkedList, toLinkedMap, toLinkedSet, toCollection for IEnumerable.
  • Add api indexOf, lastIndexOf for IEnumerable.
  • Add api findIndex, findLastIndex for IEnumerable.
  • Add api format, joining for IEnumerable to print values.
  • Add api ofNullable, chars, words, lines, split, infinite, loop, enumerate, iterate for Linq.
  • Add _indexOf and _lastIndexOf method for IList.
  • Add _findIndex() and _findLastIndex() method for IList.
  • Add IArrayList interface which extends RandomAccess for random access list and IList for other.
  • Add IArray interface to determine IArrayList contains an array or not.
  • Add CultureInfo.setCurrent to set current locale for string actions in linq.
  • Add StringComparer for string equals, hashCode and compare actions.
  • Add ValueType as super class for value type.
  • Add support more type cast to IEnumerable like IEnumerable, Iterator and Enumeration.
  • Add Linq.as() to generate IEnumerable from Object.
  • Add debug view support.
  • Add primitive functional interface.
  • Add covariant & contravariant support.

Optimizations

  • Remove override runOnce() for IList.
  • Not copy data when cast primitive array to IEnumerable.
  • Not create array when cast singleton to IEnumerable.
  • Optimize performance of takeLast.
  • Optimize range().select() and repeat().select().
  • Optimize min, max, minBy, maxBy performance.
  • Optimize TakeLastIterator dispose action.
  • Optimize toMap and toSet methods.
  • Optimize indexOf and lastIndexOf in EqualityComparer.
  • Optimize skipLast performance.
  • Optimize performance by use enumerator instead of iterator.
  • Implements IIListProvider for DistinctByIterator, CrossJoinIterator, UnionByIterator.

Changes

  • Translated all LINQ to Objects API of .net core 3.0.
  • Use ThrowHelper to throw Exceptions.
  • Rename package bridge to adapter.
  • Rename Linq.asEnumerable() to Linq.of().
  • Rename TupleMore to TupleN.
  • Rename Linq.of(CharSequence) to Linq.chars(CharSequence).
  • Update junit version to 5.x.
  • Update plugin version to latest.
  • Change the year of copyright.

Parameters covariant

  • IEnumerable (T is covariant)
  • IEnumerator (T is covariant)
  • IGrouping<TKey, TElement> (TKey and TElement are covariant)

Parameters contravariant

  • Comparator (T is contravariant)
  • Comparable (T is contravariant)
  • IEqualityComparer (T is contravariant)
  • IComparison (T is contravariant)
  • Action<T1, T2, ... TN> (T1...TN are contravariant)
  • Func<T1, T2, ... TResult> (T1...TN are contravariant, TResult is covariant)
  • Predicate<T1, T2, ... TN> (T1...TN are contravariant)

Links

v2.0.1 Release notes

Bugs

  • Fix first firstOrDefault bugs.

Features

  • Refactor from .net core 2.
  • Performance improvement.

Links

v2.0.0 Release notes

Bugs

  • Fix Comparer.compare() bugs.

Features

  • Translated all LINQ to Objects API of .net core 2.0.
  • Add class out, ref.
  • A lot of refactoring optimization has been done.

Changes

  • Performance improvement.
  • Update plugin to latest version.

Links

v1.0.1 Release notes

Bugs

  • Fix Buffer count is zero throws NullPointerException.

Features

  • Add API distinctBy, unionBy, intersectBy, exceptBy, minBy, maxBy.
  • Support CI.
  • Update logo.

Links

v1.0.0 Release notes

Features

  • Translated all LINQ to Objects API of .net framework 4.7.
  • Add unit test cases.
  • Add API leftJoin, rightJoin, fullJoin, crossJoin.
  • Support cast CharSequence to IEnumerable.
  • Add Tuple definitions.

Links