Looking to create a function with the following structure:
const updateNodeTypeByIndex = (index: Vec2 | Vec2[], type: NodeType | NodeType[]) => {
if (index instanceof Array && type instanceof Array){
// deal with array parameters
} else {
// regular parameter logic
}
}
Encountering errors while trying to implement this. Any insights on the correct approach for achieving this functionality?
If you are looking to develop a function that can handle 2 parameters, each of which could be either type T or an array of type T, and type S or an array of type S, you can achieve this using generics:
function processInput<T, S>(inputIndex: T | T[], inputType: S | S[]) {
if (inputIndex instanceof Array && inputType instanceof Array) {
// implementation for array type parameters
} else {
// implementation for regular parameters
}
}
I have an array called this.data which contains a list of platforms. Each platform has its own set of section lists, where a section list consists of values like sectionName, sectionid, and sectionVal. Now, my goal is to replace the old sectionList with a ...
How can I prevent data binding for a specific variable? Here's my current approach: // In my case, data is mostly an object. // I would prefer a global solution function(data) { d = data; // This variable changes based on user input oldD = da ...
I encountered a situation where I was successfully looping through objects in an array within my Angular 2 application using observables. In the client service file, my code looked like this: getByCategory(category: string) { const q = encodeURICompon ...
I'm currently attempting to implement the angular2 quick start example in my local environment. The only feasible way for me to serve the application is as a plugin within an existing application on my system. This particular application hosts a web ...
Currently, I am trying to edit a piece of typescript code in Visual Studio Code. However, I encountered a compiler error message that looks like this: The error states: Type 'import(\"c:/path/to/project/node_modules/@com.m...' is not assign ...
I am currently engaged in Angular4 development and have encountered an issue that I cannot seem to resolve. The problem arises when I attempt to store a value on the service provider and retrieve it from a component. Below is a snippet of my code: Service ...
I am a beginner in typescript and believe that the issue I am facing is related to typescript. Currently, I am working on an Ionic app where I have a function setwall() being called from home.html. The setwall() function is defined in home.ts. However, whe ...
One scenario is if you receive a string value from the server and have an enum type with string values defined. In TypeScript, how can you convert the string value to the enum type? export enum ToolType { ORA= 'orange', ST= 'stone' , ...
When I use the date picker onchange method, the date is passed as a string like ddmmyyyy (20102020) to dd/mm/yyyy. I am unsure of how to convert the date format from ddmmyyyy to dd/mm/yyyy. In the CustomDateParserFormatter, the string needs to be converted ...
I'm working on a component that requires users to pass only valid color values using TypeScript type checking in a React Native project. How can I achieve this and which types should I use? const TextBody = ({ color }: {color: //Need This}) => { ...
Consider this scenario: I have created a type that can only hold one specific value: export type IfEqual<T, U> = (<G>() => G extends T ? 1 : 2) extends ...
I have a Typescript class where I am attempting to perform a synchronous import, however, the import is being executed asynchronously. My code snippet looks like this: --------------100 lines of code-------------------- import('../../../x/y/z') ...
I'm currently utilizing the Angular Material datepicker component found at https://material.angular.io/components/select/overview However, it seems to only display the date without the current time: Mon May 28 2018 00:00:00 GMT+0530 (IST) Is there a ...
Is there a way to separate a string using the pipe symbol? The string I have is: Alex Santos||<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0968656c71277a68677d667a479871ab808a88878a">[email protected]</a> I on ...
How can I retrieve the row index in an Angular material table? <td mat-cell *matCellDef="let row"> <mat-checkbox (click)="$event.stopPropagation()&quo ...
I am dealing with a situation where I have two classes, parent and child, with a self-referential relationship on the child side. The database is set up with separate tables for both parent and child, sharing the same "id", and using the column "holder" as ...
We have a straightforward approach in TypeScript to perform a task: function identity(arg) { return arg; } This function takes a parameter and simply returns it, able to handle any type (integer, string, boolean, and more). Another way to declare thi ...
In my typescript class, I have a member that accepts any as the name: interface ControlTagType { type?: String | null; [name: string]: any } class ControlTag { tagSource: String | null = null; tag: ControlTagType | null = null; } expor ...
From my experience, this code should work just fine... let DynamicFunction = Object.getPrototypeOf(dynamic function(){}).constructor; export function generateJsFunction(event: string, body: string[]): any { return new DynamicFunction(body.join("\n ...
function parseAndValidate(obj: unknown): ParsedObj | void { try { // conducting various validations return parsedObj } catch { throw new Error('obj is invalid') } } const parsedObj = parseAndValidate(obj) I ...