Subject and BehaviorSubject differences - Angular

What is the difference between Subject and BehaviorSubject?BehaviourSubject will return the initial value or the current value on Subscription. When it is subscribed it emits the value immediately. A Subject doesn't hold a value.Subject example (with RxJS 5 API):const subject = new Rx.Subject();subject.next(1);subject.subscribe(x => console.log(x));Console output will...

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How to Improve Web API Performance

Web Api: This is a framework for building HTTP services with easy and simple way.Web API is open source an ideal platform for building REST-ful services over the .NET Framework.It is light weight architecture and good for devices which have limited bandwidth like smart phones.In this page, we will discuss...

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Difference between Constructor and ngOnInit

Angular provides lifecycle hook ngOnInit by default.Why should ngOnInit be used, if we already have a constructor?The Constructor is a default method of the class that is executed when the class is instantiated and ensures proper initialization of fields in the class and its subclasses. ngOnInit is a lifecycle hook called by Angular to indicate that Angular is done creating the component.We have...

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Difference Among Angular 8, 7, 6, 5, 4, 3, 2

Difference Among Angular 8, 7, 6, 5, 4, 3, 2 — Breakdown, New Features, and ChangesThe first version of Angular was released in the year of 2010. Some people call this as AngularJS and some people call as Angular 1. But it is officially named as AngularJS.Let’s dive into changes angular made overtime...

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