Lambda expressions are a reasonably easy switch to Java, and the 1st a part of the booklet indicates you the way to take advantage of them effectively. Later chapters express you the way lambda features assist you increase functionality with parallelism, write easier concurrent code, and version your area extra properly, together with construction greater Dsls.
- Use workouts in each one bankruptcy that will help you grasp lambda expressions in Java eight quickly
- Explore streams, complex collections, and different Java eight library improvements
- Leverage multicore Cpus and increase functionality with facts parallelism
- Use options to “lambdify” your latest codebase or library code
- Learn useful ideas for lambda expression unit checking out and debugging
- Implement stable ideas of object-oriented programming with lambdas
- Write concurrent functions that successfully practice message passing and non-blocking I/O
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Extra resources for Java 8 Lambdas: Functional Programming For The Masses
Five Your First Lambda Expression the way to Spot a Lambda in a Haystack utilizing Values useful Interfaces style Inference Key issues routines five 6 eight nine eleven thirteen 14 three. Streams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 From exterior generation to inner new release What’s truly happening universal circulate Operations collect(toList()) map clear out flatMap max and min a typical development seems lessen placing Operations jointly Refactoring Legacy Code 17 20 21 22 22 24 25 26 27 28 30 31 iii Multiple flow Calls Higher-Order services solid Use of Lambda Expressions Key issues routines complicated workouts 34 36 36 37 37 39 four. Libraries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . forty-one utilizing Lambda Expressions in Code Primitives Overload answer @FunctionalInterface Binary Interface Compatibility Default equipment Default equipment and Subclassing a number of Inheritance the 3 ideas Tradeoffs Static equipment on Interfaces non-compulsory Key issues workouts Open workouts forty-one forty two forty five forty seven forty seven forty eight forty nine fifty two fifty three fifty four fifty four fifty five fifty six fifty seven fifty eight five. complicated Collections and creditors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . fifty nine process References point Ordering input the Collector Into different Collections To Values Partitioning the knowledge Grouping the information Strings Composing creditors Refactoring and customized creditors relief as a Collector assortment Niceties Key issues routines fifty nine 60 sixty two sixty two sixty three sixty four sixty five sixty six sixty seven sixty nine seventy six seventy seven seventy eight seventy eight 6. facts Parallelism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . eighty one Parallelism as opposed to Concurrency iv | desk of Contents eighty one Why Is Parallelism vital? Parallel movement Operations Simulations Caveats functionality Parallel Array Operations Key issues workouts eighty three eighty three eighty five 88 89 ninety two ninety four ninety four 7. trying out, Debugging, and Refactoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ninety seven Lambda Refactoring applicants In, Out, In, Out, Shake all of it concerning the Lonely Override Behavioral Write every little thing two times Unit checking out Lambda Expressions utilizing Lambda Expressions in try out Doubles Lazy review as opposed to Debugging Logging and Printing the answer: peek Midstream Breakpoints Key issues ninety seven ninety eight ninety eight ninety nine 102 one hundred and five 106 106 107 107 108 eight. layout and Architectural rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Lambda-Enabled layout styles Command development approach development Observer trend Template strategy development Lambda-Enabled Domain-Specific Languages A DSL in Java How We acquired There evaluate Lambda-Enabled sturdy ideas the only accountability precept The Open/Closed precept The Dependency Inversion precept additional examining Key issues one hundred ten one hundred ten 114 117 119 123 124 a hundred twenty five 127 127 128 one hundred thirty 134 137 137 nine. Lambda-Enabled Concurrency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Why Use Nonblocking I/O? Callbacks 139 one hundred forty desk of Contents | v Message Passing Architectures The Pyramid of Doom Futures Completable Futures Reactive Programming while and the place Key issues workouts a hundred and forty four a hundred forty five 147 149 152 a hundred and fifty five one hundred fifty five 156 10. relocating ahead.