v1.2.2

• Added teeing collector (from Java 12)
• Added mapMulti operator for all streams and mapMultiToInt, mapMultiToLong, mapMultiToDouble to object Stream (from Java 16)
• Added findFirstOrElse(defaultValue), append(T), prepend(T) to Stream (thanks to @wjtxyz)
• concat now supports 3+ streams or iterators
• Added SpinedBuffer for objects. SpinedBuffer now public, but it slightly differs from Java 8 API.
• Fixed unnecessary unboxing of dropWhile, takeUntil, filterIndexed, mapIndexed and scan operators in primitive streams
• Methods marked with nullability annotations
• Many other improvements

v1.2.1

• Added ofNullable for primitive Optionals (thanks to @mannodermaus)
• Added filterIndexed, mapIndexed, forEachIndexed operators to primitive streams (thanks to @PromanSEW)
• Added an ability to combine multiple predicates (thanks to @SunnyJithin for suggestion)
• Added isEmpty method for Optionals (from Java 11)

v1.2.0

• Added Optional.mapToBoolean (thanks to @bejibx)
• Added Stream.equalsOnly operator (thanks to @operando)
• Added deepEquals, requireNonNullElse, requireNonNullElseGet, isNull, nonNull and requireNonNullElements methods to Objects (thanks @ened for suggestion)
• Added orElseThrow() method to Optional classes. Please, prefer this method instead of get() as it better reflects the behavior of the method
• Added toUnmodifiableList(), toUnmodifiableSet() and toUnmodifiableMap() collectors from Java 10 (thanks to @javadev and @PromanSEW). See PromanSEW's comment
• The Collectors.toMap implementation was changed to match Java 8 specs. toMap(keyMapper), toMap(keyMapper, valueMapper) and toMap(keyMapper, valueMapper, mapFactory) now disallows duplicate keys. If the mapped keys contain duplicates, use new toMap(keyMapper, valueMapper, mergeFunction) and toMap(keyMapper, valueMapper, mergeFunction, mapFactory) methods
• Removed useless FunctionalInterface annotation
• Removed deprecated Stream.getIterator method

v1.1.9

• Added custom operators for Optionals (thanks to @dr-projectiro for suggestion)
• Added filterNot for Optionals
• Added Stream.merge operator (thanks to @landawn)
• Added Stream.concat for iterators
• Added Stream.ofNullable for array, map and iterator (thanks to @petnagy)
• Added Collectors.partitioningBy
• Added getOrElse(Supplier), isPresent and custom operators support for Exceptional (thanks to @PromanSEW)

v1.1.8

• Added findIndexed operator. Thanks to @PromanSEW
• Added an ability to run action after closing streams. Stream classes now implements Closeable, close and onClose methods are added. Thanks to @frett
  Notice that it is not necessary to close all streams. Please, refer to official Stream API documentation: https://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html
• Added IntStream ofCodePoints. Thanks to @arturogutierrez
• Added OptionalBoolean and boolean functional interfaces. Thanks to @PromanSEW
• Added distinctBy and findLast operators. Small optimization of distinct operator. Thanks to @landawn

streamTest

• Added OptionalBooleanMatcher

v1.1.7

• Added primitive throwable interfaces and Util.safe converters. Thanks to @PromanSEW
• Improved comparators chaining in ComparatorCompat . Thanks to @BattleShipPark
• Fixed filter operator in primitive streams. Thanks to @romainpiel
• Removed deprecated Stream.ofRange methods.
• Iterators moved to separate package.

Warning

If you're using PrimitiveIterator, PrimitiveExtIterator or LsaExtIterator to create own custom operators, please, fix imports:

// Before
import com.annimon.stream.PrimitiveIterator;
import com.annimon.stream.LsaExtIterator;

// After
import com.annimon.stream.iterator.PrimitiveIterator;
import com.annimon.stream.iterator.LsaExtIterator;

If you're using ComparatorCompat.chain, see #110

streamTest

• StreamMatcher.elements now uses Iterable matcher
• Removed deprecated StreamMatcher.isNotEmpty method

v1.1.6

• Added Stream.withoutNulls() Stream.nullsOnly() and Predicate.Util.notNull(). Thanks to @IlyaGulya
• Added Java 8 Comparator backport. Thanks to @BattleShipPark
• Added Objects.compareInt and Objects.compareLong — backport of Java 7 Integer.compare and Long.compare
• Added takeUntil and scan operators
• Added indexed operators: filterIndexed, mapIndexed, takeWhileIndexed, takeUntilIndexed, dropWhileIndexed, reduceIndexed, forEachIndexed and indexed functional interfaces.
  Many thanks to @dalewking for help and suggestions.
• Fixed unnecessary boxing in filter, flatMap, scan and single operators of primitive streams.
• Reduced calls to first iterator in Stream.concat
• Stream operators now placed into named classes in separate package. It can speed up the execution and improve stack trace readability. See an example.
• Many other fixes and improvements.

streamTest

• Added stream custom operator assertions:

  Stream.range(1, 4).custom(assertElements(contains(1, 2, 3)))

• Update mockito to 2.7.13

v1.1.5

• Added Stream.ofNullable(T element) and Stream.ofNullable(iterable) methods
• Added Stream.toList() which can be much faster and convenient than collect(Collectors.toList()) (thanks to @akonior for both great ideas)
• Fixed NPE in flatMap iterator of primitive streams
• New faster implementation of Stream.distinct()
• Added iterate(T seed, Predicate p, UnaryOperator op) method for all streams

v1.1.4

• Added LongStream and DoubleStream
• Added OptionalLong and OptionalDouble
• Added functional interfaces for operating with long and double primitive types
• Added Exceptional.of(Throwable) factory method (thanks to @arturdm)
• Added mapToLong, mapToDouble, flatMapToLong, flatMapToDouble to Stream
• Added mapToLong, mapToDouble to IntStream
• Added mapToLong, mapToDouble to Optional
• Added filter, ifPresentOrElse, mapToLong and mapToDouble methods to OptionalInt
• Added longs and doubles methods to RandomCompat
• Fixed IllegalArgumentException in RandomCompat ints method, when bound is greater than max int
• Fixed IntStream rangeClosed deadlock on Integer.MAX_VALUE bound
• Stream range and rangeClosed now uses IntStream/LongStream internally
• Removed unnecessary abstraction in primitive streams
• Small other optimizations and javadocs fixes

streamTest

• Added IntStreamMatcher, LongStreamMatcher and DoubleStreamMatcher
• Added OptionalLongMatcher, OptionalDoubleMatcher
• Updated mockito version to 2.2.17

v1.1.3

• Added summingInt, summingLong, summingDouble, averagingInt, averagingLong, averagingDouble collectors
• Added flatMapping and filtering collectors, which introduced in Java 9
• Added ToLongFunction and ToDoubleFunction interfaces
• Added Optional.mapToInt, OptionalInt.map and OptionalInt.mapToObj methods
• Added IntStream.single, IntStream.findSingle methods
• Collectors.counting now uses summingLong to avoid unnecessary boxing
• Collectors.averaging now deprecated and uses averagingDouble internally, also fixed NaN result for empty stream
• Improved JavaDocs