practice-c | Part of my daily plan for studying C | Frontend Framework library

I'm trying to implement a service-component communication in angular, when service holds a value and component subscribes to it change. I'm using rxjs Subscription, but I'm getting

I'm trying to navigate back to a Menu component, but when I trigger a route to do so, the previous rendered Practice component is rendered in the root domain level, which should just be for the Menu component.

The solutions for similar questions on StackOverflow say to use exact in the route, but as you can see I have this in place.

How do I make this work as expected? Thanks.

Here's what I have...

App.js

https://codesandbox.io/s/asyncawait-axios-practice-c060n

This is a link to a sandbox I have with simple code. Why does it keep returning a promise and not waiting until the it is finished resolving as I put await before the axios call?

It's as if it's just returning the promis and it's done. If I do a console.log inside the function local scope it will return a promise object and if I return the result and do a console.log in global scope, it will return what I'm looking for. The thing is, I thought I didn't have to do it that way and wait for the promise to resolve. I get that asyn returns a promise and axios does too... so what am I missing when dealing with promises resolving promises?

I am just starting to learn C# and Microsoft Visual Studio. I just created a C# console application project which has a program.cs file. I modified its content like this:

I am unit-testing a Component which uses two other components. The other components are created when button is clicked

.html

Please check the following example in codepen. I want the page to fit exactly in the viewport but the page is bigger than the viewport and the browser is showing scrollbars. How can I fit the page exactly in the viewport?

https://codepen.io/manuchadha/pen/PBKYBJ

HTML

I've been trying to add a label using an IBOutlet from an xib to a custom UICollectionViewCell class that is meant to be used as the cells for a UICollectionView that I have in another xib but when I add the outlet I get an NSUnknownKeyException on the label reference I've created, without the outlet reference the contents of the cell load properly but I want to be able to manipulate the label within the cell.

Heres what I have in my parent xib class:

My Angular app's css structure is

-top level app has a css grid with 3 rows -nav component takes 1st row -content-component takes 2nd row -footer takes 3rd row

I've been trying to teach myself inheritance using java, but I am really confused and it seems online youtube videos/looking at previous questions are not helping at all. I tried the practice problems on this website: http://javaconceptoftheday.com/java-inheritance-practice-coding-questions/ , but I am having trouble with questions 2, 3, and 7.

In question 2, since the constructor of object a is B(), why wouldn't it print class B's i value instead of class a's? Instead it prints class a's and I have no idea why.

In question 3, is the reason that the program prints 1 2 3 because there are no constructors and it's just the function? I know when you inherit from a class, you basically act as if all of its functions are in the subclass, so do you basically just pretend class C says:

System.out.println(1);

System.out.println(2);

System.out.println(3);?

In question 7, since the constructor is a C() constructor, why does it still go through the code in the constructor for class A and class B?

Thank you for any help you can give, inheritance is just one of the topics I did not cover in my intro to programming class so I'm trying to fill in all of the blanks before fall semester starts.

Code for question 2: