Hey there! I'm working on a function within a Point class that adds up the values of X and Y with either Point or individual X and Y parameters.
For example:
public Offset(dx: number, dy: number) {
this.X += dx;
this.Y += dy;
}
public OffsetPoint(p: Point) {
this.X += p.X;
this.Y += p.Y;
}
I was wondering if it's possible to consolidate these two functions into one in TypeScript instead of having separate ones?
In my opinion, there is no definitive right way to approach this problem. However, I have stumbled upon a clever workaround:
class Point {
X: number
Y: number
constructor(X: number, Y: number) {
this.X = X;
this.Y = Y;
}
public Offset(dx : number | Point , dy? : number) {
if (dy) {
this.X += dx as number;
this.Y += dy as number;
} else {
let p = dx as Point;
this.X += p.X;
this.Y += p.Y;
}
}
}
let a = new Point(1, 1);
let b = new Point(2, 2)
console.log('a.x', a.X, 'a.y', a.Y); // "a.x", 1, "a.y", 1
a.Offset(b)
console.log('a.x', a.X, 'a.y', a.Y); // "a.x", 3, "a.y", 3
a.Offset(10, 20)
console.log('a.x', a.X, 'a.y', a.Y); // "a.x", 13, "a.y", 23
I am attempting to transform a complex JSON response object (received from my Node.js/Mongoose backend) into a TypeScript class that contains multiple type classes. A Moment class includes an author of type User and a comments array of type Comment. mome ...
I'm having trouble understanding how this is supposed to function. I have a parent class with props and an interface for the child class's props. The issue arises with a TypeScript error message: The property 'lineWidth' does not exist ...
Could something like the following be achievable: {{property | some_variable_name}} I am aiming to utilize a pipe that is defined in a JSON configuration (or variable), but I am uncertain if it is feasible to include the pipe name within the interpolatio ...
Just delving into TypeScript and I've hit a snag when trying to pass an element to another component. Feeling lost on how to proceed. Error lurking in Cards component export default function MySpecialProject() { const [toggle, setToggle] = useState ...
My current approach involves a function that validates if a variable is an object and not null: function isRecord(input: any): input is Record<string, any> { return input !== null && typeof input === 'object'; } This type predica ...
I am facing a dilemma where I need to make a server request based on an ID stored in AsyncStorage. This is the setup I have been thinking about: AsyncStorage.getID().then(id => { useLoadFromServer(id) } However, I keep running into errors related t ...
I am trying to ensure that the return object from a function in TypeScript only allows keys that correspond to string values present in an array passed as an argument to the function. The returned object should contain a subset of keys from a list of valid ...
Each time I attempt to utilize the JSON pipe to pass my data, an error message appears in the console: Unhandled Promise rejection: Template parse errors: The pipe 'json' could not be found (... Can someone help me understand what mistake I am ...
I have a series of checkboxes with labels such as (Beginner, Intermediate, Advanced, Expert, etc.). When I click on any checkbox, I want all previous checkboxes to be checked. For example: If I click on Advanced, only the preceding checkboxes should get ...
For my latest project, I've been working on creating an API that utilizes PostgreSQL to store shortened links. However, I keep encountering the issue where postgreClient is consistently undefined when attempting to run a query to the database. In my ...
When using Flow Types: export type GroupType = { options: OptionsType, [string]: any, }; What does the syntax [string]: any signify? Edit : Appreciate all the responses provided. How should I interpret this particular piece of code? import type { ...
Often, the code breaks due to incorrect types for label, description, details. To ensure proper arguments are provided: label should be a string. description should be either a string or an array of strings. details should be a string. As a TypeScript ...
After writing a protractor test for an Angular application with a non-angular login page, I decided to include the login process in a separate file using browser.waitForAngularEnabled(false);. I then created a describe block with a series of it blocks to ...
Currently, I am in the process of developing a front-end application using Angular 2 that retrieves data from a Rails 5 API. This specific application serves as a network inventory tool. One particular feature of this app is an Asset-form in Angular2 whic ...
Encountering an issue with mocha-typescript throwing an error indicating that describe is not defined. TypeError: mocha_typescript_1.describe is not a function at DatabaseTest.WrongPath (test/database_test.ts:21:9) at Context.<anonymous> ...
Exploring the world of nextJS and typescript is new to me. I am currently working on creating a simple blog using nextJS/typescript with a sanity CMS backend. Everything seems to be running smoothly during development, but then I encounter this Unhandled R ...
Currently diving into the world of material-ui for implementation in a Typescript React setup. Utilizing the code snippet below in a Dialog: ... <React.Fragment> <Typography variant="body1"> <Box mt={1}>Heading</Box> & ...
I came across this specific type in the ES5 definitions for TypeScript and was intrigued by its purpose as the description provided seemed quite vague. /** * Removes the 'this' parameter from a function type. */ type OmitThisParameter<T> ...
In my Angular project, I am utilizing the ngx-charts bubble chart to illustrate events on a timeline. The chart content dynamically updates as users narrow down a specific time range. Although I am straying slightly from the intended use of the bubble cha ...
Currently, I am working on developing a React component that wraps around the Select component from react-select. The issue arises with a specific prop declaration that can be seen here: export type SelectComponentsProps = { [key in string]: any }; expor ...