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1. Commits on Oct 10, 2026

   • Sonar reliability: exclude two deliberate failures, use one collect() result

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   • Examples for the Collectors.groupingBy() article

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2. Commits on Oct 8, 2026

   • Examples for the parallel streams article

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   • Parallel streams benchmarks: results of the shuffled sorted() and distinct() run

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   • OrderBenchmark: sorted() on shuffled numbers, distinct() with 100,000 values

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   • Parallel streams benchmarks: results of the M5 Pro run

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   • Benchmarks for the parallel streams article

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3. Commits on Oct 4, 2026

   • README: link to the English Collectors.toMap() article

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4. Commits on Oct 3, 2026

   • Examples for the Collectors.toMap() article

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   • Ch5ReduceVsCollect: method references before map() as a step of its own

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   • Ch5ReduceVsCollect: the book-stream collect() uses plain lambdas

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   • Ch5ReduceVsCollect: collect() on the book stream, five parallel runs

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   • Ch3Applications: and() and andThen() as the readable alternatives

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   • Money stores cents as a long instead of a BigDecimal

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   • Ch3Applications: a Money record, and allMatch() for a list of conditions

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   • Stream reduce(): the chapters of the new article pair

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   • Ch10Mistakes: UnaryOperator<Integer> against IntUnaryOperator

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   • Ch7Wildcards: the map() example uses both wildcards

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   • Ch1Definition: comments say what each Comparator line needs

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   • Ch1Definition: Runnable as the simplest functional interface first

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5. Commits on Sep 29, 2026

   • Bump com.diffplug.spotless:spotless-maven-plugin from 3.10.2 to 3.10.3

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6. Commits on Sep 28, 2026

   • Bump org.mockito:mockito-junit-jupiter from 5.23.0 to 5.24.0

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7. Commits on Sep 26, 2026

   • Functional interfaces: the chapters of the new article pair

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8. Commits on Sep 25, 2026

   • Sonar: the Optional listings say what they demonstrate

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   • Ch7WhenToUse: Optional as a collection element

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   • LibraryBeforeJava8: getByTitle() and getNextBookBy()

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   • Ch5Transforming: the nested Optional for Dracula, and or() next to orElseGet()

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   • Ch5Transforming: one variable per case in the map() and flatMap() examples

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   • Ch3GettingTheValue: fallbackTitle(), as the article now calls the value of orElse()

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   • LibraryBeforeJava8: the null-returning lookups under the same names

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9. Commits on Sep 24, 2026

   • Optional chapters: the null-returning lookup, and == on two distinct strings

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   • Optional article: its chapters as classes in eu.happycoders.optional

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10. Commits on Sep 23, 2026

    • Ch8Mistakes: recursion through a named method next to the field

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    • Ch7UnderTheHood: removing a lambda from a list needs the same reference

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    • Ch6WhereUsed: the groupingBy() variant next to computeIfAbsent()

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