Questions tagged [overloading]

Polymorphism refers to a programming concept where different functions or operator implementations are executed based on the data types of the parameters passed. It is important to note that this definition does not apply to overloading in PHP, as the meaning of that term in PHP is unrelated.

Tips for ensuring that functions can pass arguments with uniform overloads

I need to create a function that passes its arguments to another function, both with the same overloads. function original (a: number): boolean; function original (a: string, b: string): boolean; function original (a: number | string, b?: string): boolean ...

A guide on determining the return type of an overloaded function in TypeScript

Scenario Here is a ts file where I am attempting to include the type annotation GetTokenResponse to the function getToken. import { ConfigService } from '@nestjs/config'; import { google, GoogleApis } from 'googleapis'; import { AppCon ...

Is List Comprehension Behavior Being Overloaded?

I have been given the task of designing a model representing cages filled with hardware. Each cage has N slots, with each slot potentially containing a card. To create this model, I plan to utilize a list where each index corresponds to a specific slot nu ...

Creating a function that can have either one or two arguments, with the types of the arguments determined by a specific string literal

I am looking to create a function called emitEvent(event, extra?), which will be restricted by a string literal enum of known strings such as POPUP_OPEN and POPUP_CLOSED. The function will accept a second argument that is a specifically defined dictionary ...

The call in TypeScript React does not match any overload

Encountering an error with a React component that I wrote and seeking assistance. The primary component code snippet: export interface ICode { code: (code: string) => void; } export default class UserCode extends React.Component{ state = { formFil ...

The concept of overloaded function types in TypeScript

Is it possible to create an overloaded function type without specifying a concrete function? By examining the type of an overloaded function, it appears that using multiple call signatures on an interface or object type is the recommended approach: functi ...

Determine the output type of a function in Typescript using an input value specified by an enum

I am currently saving settings to local storage and want to be able to input responses when retrieving (and possibly inserting) values from/to the storage. After researching, it seems that using function overloading is the best approach. Here is what I ha ...

Body not being checked for overloads

Is there a way for TypeScript to validate the function body against function overloads? Despite having multiple signatures, it seems that the function implementation is not being checked properly: function a(input: string): string function a(input: number ...