Exploring the nuances of angular2 services: what distinguishes a private static function from a public static function in typescript?
public static getUserStockList(): Stock[] {
/* TODO: implement http call */
return WATCHLIST;
}
vs.
private static getUserStockList(): Stock[] {
/* TODO: implement http call */
return WATCHLIST;
}
QUERY:
Under what circumstances would opting for a private static function be more suitable than a private function?
One interesting aspect of private static methods is that they can be called from instances of the same class.
Here's an example to illustrate this:
interface Info {
// ...
}
interface SecureInfo {
// ...
abstract class MyObject {
protected constructor(info: SecureInfo) {
// ...
}
}
class AnotherObject extends MyObject {
private static processInfo(info?: Info | SecureInfo): SecureInfo {
// ...
}
constructor(info?: Info | SecureInfo) {
super(AnotherObject.processInfo(info));
}
}
The method AnotherObject.processInfo can be accessed by both the instance and the compiler without any issues.
However, attempting to do this:
console.log(AnotherObject.processInfo({}));
Will yield the following error message:
Property 'processInfo' is private and can only be accessed within the 'AnotherObject' class
I encountered an issue while trying to upload an image using Angular and Node.js on the server-side. Unfortunately, when attempting to view the webpage, I am unable to see anything. Here is the browser output: https://i.stack.imgur.com/t9MrF.png Below is ...
While waiting for the completion of one API call, I am recursively consuming an external API. The http calls are being made using import {HttpClient} from '@angular/common/http' As a newcomer to the framework, there may be something wrong in the ...
After updating to Expo SDK 37, my original code that was previously functioning started encountering issues with <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0e7c6b6f6d7a23606f7a67786b23796b6c78667f79627a">[email prot ...
I'm currently working on developing an application using Angular 11 and .NET 5 and am facing some challenges while trying to implement the file upload feature. I have successfully managed to send pictures to the server, but I'm encountering issue ...
I encountered an error message while trying to render a component from an object. Type 'FC<Boxprops> | ExoticComponent<{ children?: ReactNode; }>' is not compatible with type 'FC<Boxprops>'. Type 'ExoticComponen ...
Recently, I began working with fp-ts and wanted to create a method with functional-like behavior that would: Parse a bearer token Verify the validity of the user using the parsed token import { Request } from 'express'; import { either } from & ...
I am struggling to implement a filter search feature in my ionic mobile application for an array of objects. The array is structured like this: initializeItems() { this.items = [ {Place:"Dumaguete city", date:"February 2 2018"}, {Place:"Sibulan", date: ...
I have developed a popover module that consists of two components and three directives. However, I am encountering an issue where I am unable to utilize the directives outside of the main component. Whenever I try to do so, I face an editor error stating: ...
When clicking on the edit button, data is loaded into the form using [(ng-model)], however, it seems to be working correctly only for some fields and not all fields. The data is displayed in only a few fields despite receiving data for all fields. Below is ...
I have an array of data containing selected items, and I need to extract the IDs from this array into a new array so that I can send only the IDs to the back-end. Sample Code method toggleSelection(rows) { console.log('this.multipleSelection : &a ...
Is there a way to make RXJS wait until it finishes its work? Here is the function I am using: getLastOrderBeta() { return this.db.list(`Ring/${localStorage.getItem('localstorage')}`, { query: { equalTo: fa ...
I'm relatively new to developing Node.js applications for production. I've created an app using TypeScript for the backend of my Node.js project. Currently, in the package.json file, I have the following script section: "scripts": { ...
After following the instructions in this URL to configure Amazon CloudFront CDN for WebSocket connection, , I am struggling to connect WebSocket through my Angular app. I have attempted two ways but haven't been successful. let data = this.httpClien ...
Just starting my Angular journey. I have successfully installed the latest version of node.js with npm and then added Angular CLI to it. All good until I typed this command in the node.js prompt: ng new my-app But now I'm stuck here! Any ideas on wh ...
In my file called checkoutTypes.ts, I have defined some checkout types like this: export type CheckoutInvoiceAddressSection = "InvoiceAddress"; export type CheckoutDeliveryAddressSection = "DeliveryAddress"; export type CheckoutDelivery ...
Encountering an issue with Angular2 where I need to assign a unique identifier to my reusable component. Seeking assistance from the community. account.html <div class="container"> <!-- ACCOUNT INFO --> <div class="row"> ...
Consider this template example. I am creating a user context using the as syntax and want to pass it into the userTmpl. It seems like there is no direct way to pass context beyond what is specified in the ngIf condition, which in this case is the showUser ...
I'm working on a project with 2 sources and I need to import a file from MyProject into nest-project-payment. Can you please guide me on how to do this? Here is the current file structure of my project: https://i.stack.imgur.com/KGKnp.png I attempt ...
In my current project, I have been working on implementing a unique Angular structural directive. This directive is designed to read and store the text content of an HTML element along with all its children, remove the contents upon AfterViewInit, and then ...
I am trying to set up an Angular reactive form with multiple sub-components. My goal is to validate both the parent and child form components at once when the user clicks the Submit button. Currently, I am running into an issue where error messages only ...