Mar 3, 2016 · Angular provides life cycle hook ngOnInit by default. Why should ngOnInit be used, if we already have a constructor?

Oct 24, 2010 · public class Sample { public Sample(string theIntAsString) { int i = int.Parse(theIntAsString); _intField = i; } public Sample(int theInt) => _intField = theInt; public int …

So since I've been using Spring, if I were to write a service that had dependencies I would do the following: @Component public class SomeService { @Autowired private SomeOtherService

Nov 16, 2011 · Constructor acts very similarly to a method returning the constructed type. And async method can't return just any type, it has to be either “fire and forget” void, or Task. If the constructor …

In C++ the only difference between a class and a struct is that members and base classes are private by default in classes, whereas they are public by default in structs. So structs can have constructors, …

Nov 4, 2008 · Yes! Abstract classes can have constructors! Yes, when we define a class to be an Abstract Class it cannot be instantiated but that does not mean an Abstract class cannot have a …

In short, always prefer initialization lists when possible. 2 reasons: If you do not mention a variable in a class's initialization list, the constructor will default initialize it before entering the body of the …

Yes, you will have to implement the constructors that make sense for each derivation and then use the base keyword to direct that constructor to the appropriate base class or the this keyword to direct a …

Oct 2, 2013 · public class Album { public string Name {get; set;} public string Artist {get; set;} public int Year {get; set;} public Album() { } public Album(string name, string artist, int year) { this.Name = …

Oct 27, 2017 · Type 'Function' provides no match for the signature ' (lat: number, lng: >number): void' I read about contructor-interfaces in typescript, but I don't think it's applicable here. Edit: What I don't …