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I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

Declarative vs. Imperative Programming From A Web App Perspective

In his article Declarative vs. Imperative Programming for the Web visual content designer and self-described former engineer Pascal Cremer does a nice job at explaining the differences between these two common programming paradigms and how declarative programming can lead to much more concise, comprehensible and readable code. He provides examples from a web context and shows how declarative programming lends itself to being used in a functional reactive programming style, which has become very popular with frameworks such as RxJS. Read more

How to Subscribe to Multiple RxJS Observables in Angular

Cory Rylan, Google Developer Expert and instructor at Angular Boot Camp wrote this article on subscribing to multiple observables in Angular components. In this article, Cory explains how to use the RxJS forkJoin and combineLatest operators in conjunction with Angular's *ngIf directive and the AsyncPipe in order to consume asynchronous data provided by multiple RxJS Observables. Read more

Michael Hladky @ AngularConnect 2018: RxJS schedulers in depth

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RxJS: Observables, Observers, Subjects …

When developing web applications - or in fact any kind of application that involves interaction via a user interface - we inevitably have to deal with asynchronous events, perhaps even streams of such events, e.g.: mouse clicks asynchronous HTTP calls and subsequent display of data push notifications Because events are such an essential part of both the feature set and the user experience of many, if not even most, user-facing applications frameworks such as Angular treat them as first-class citizens and provide developers with ... Read more