reactive-programming

I was wondering how can I process an array where each value returns a Promise in the same order as they're specified. For example, let's say I want to call multiple Ajax calls in this order: var array = [ 'http://example.org', 'http://otherexample.org', 'http://anotherexample.org', ]; There's basicaly the same question: How can I use RxJs to hold off any requests for an AJAX call until the previous one resolves , which suggests using flatMapFirst . Since I'm using Angular2 ( beta-15 at this moment) in TypeScript which uses rxjs@5.0.0-beta.2 I found out that flatMapFirst has been renamed to

I have a RxJS5 pipeline looks like this Rx.Observable.from([2, 3, 4, 5, 6]) .takeWhile((v) => { v !== 4 }) I want to keep the subscription until I see 4, but I want to last element 4 also to be included in the result. So the example above should be 2, 3, 4 However, according to official document , takeWhile operator is not inclusive. Which means when it encounters the element which doesn't match predicate we gave, it completes the stream immediately without the last element. As a result, the above code will actually output 2, 3 So my question is, what's the easiest way I can achieve takeWhile

RxJS 5.5 makes a big breaking change and introduces lettable operators to replace basically all operators (called "patch" operators) we used to use before. That article contains a note: Lettable operators can now be imported from rxjs/operators, but doing so without changing your build process will often result in a larger application bundle. This is because by default rxjs/operators will resolve to the CommonJS output of rxjs. This statement is easy to proof on the practice with the brand new AngularCLI-generated app. When we have an application that doesn't import anything from RxJS: import

Consider the following example: Observable.range(1, 10).subscribe(i -> { System.out.println(i); if (i == 5) { throw new RuntimeException("oops!"); } }, Throwable::printStackTrace); This outputs numbers from 1 to 5 and then prints the exception. What I want to achieve is make the observer stay subscribed and continue to run after throwing an exception, i.e. print all numbers from 1 to 10. I have tried using retry() and other various error handling operators , but, as said in the documentation, their purpose is handling errors emitted by the observable itself. The most straightforward solution