Any interface can be functional interface, not merely those that come with Java. To declare your intention that an interface is functional, use the@FunctionalInterfaceannotation. Although not necessary, it will cause a compilation error if your interface does not satisfy the requirements (ie. one ...
Chapter 7, TDD and Functional Programming – A Perfect Match, dives into the functional programming paradigm and how TDD could be applied when programming in that way. We'll explore parts of the functional API provided by Java since version 8 and create readable and meaningful tests. Chapter 8...
You can write a function that does map, then join. This function is called bind, or flatMap, or (>>=), or (=<<). This is normally how a monad instance is given in Haskell. A monad has to satisfy certain laws, namely that join must be associative. This means that if you have ...
publicvoidwhenNonEmptyList_thenMonoDeferNotExecuted(){ Mono<List<String>> nonEmptyist = Mono.defer(() -> monoOfList());//Non empty list, hence Mono publisher in switchIfEmpty won't evaluated.Flux<String> listElements = nonEmptyist.flatMapIterable(l -> l) .switchIfEmpty(Mono.defer(() -...
what 's different between rxjava .flatmap { } kotlin 's also { } apply { } ? what 's different between rxjava .flatmap { } kotlin 's also { } apply { } ?
Odersky pointed out something I like about Scala in response to another question. He stated that Scala allows the developer to easily specify a piece of data is mutable. I like that Scala ‘does not prejudice’ against mutable data and allows the developers to choose to do so if they want...
There are a couple in the Map interface as well. You should check a good Java book like Java 8 in Action to find out more about such important methods. That's all about what is default methods in Java 8, Why default or defender methods were added in Java programming language, and how...
Before purchase RubyMotion, I'd like to know does it support 3rd party SDKs, e.g.: facebook-ios-sdk? While I haven't tested thoroughly, and can't speak for all SDKs/libraries, I can confirm that this ... Avoiding time consuming logic when using flatmapIterable ...
Before purchase RubyMotion, I'd like to know does it support 3rd party SDKs, e.g.: facebook-ios-sdk? While I haven't tested thoroughly, and can't speak for all SDKs/libraries, I can confirm that this ...Avoiding time consuming logic when using flatmapIterable I have a task to ...
Java provides an inbuilt solution for our problem. So, what's the wait? Let's start! What is Blocking Deque in Java? BlockingDeque is a deque that is thread-safe. Multiple threads can work on the same data structure without any error or exception. But, a BlockingDeque has a lock on th...