1
0
mirror of https://github.com/kamranahmedse/developer-roadmap.git synced 2025-08-19 07:31:24 +02:00

Fix mistake in constructor overloading

This commit is contained in:
Kamran Ahmed
2023-02-13 14:19:30 +00:00
committed by GitHub
parent dcf0f94af9
commit 5c1d803892

View File

@@ -1,30 +1,20 @@
# Constructor Overloading
In TypeScript, you can achieve constructor overloading by using multiple constructors with different parameter lists in a single class. When you create an instance of the class, the constructor with the matching parameter list is called. Here's an example:
In TypeScript, you can achieve constructor overloading by using multiple constructor definitions with different parameter lists in a single class. Given below is the example where we have multiple definitions for the constructor:
```typescript
class MyClass {
property1: number;
property2: string;
constructor(property1: number) {
this.property1 = property1;
}
constructor(property1: number, property2: string) {
this.property1 = property1;
this.property2 = property2;
class Point {
// Overloads
constructor(x: number, y: string);
constructor(s: string);
constructor(xs: any, y?: any) {
// TBD
}
}
```
In this example, we have two constructors with different parameter lists: constructor(property1: number) and constructor(property1: number, property2: string). When you create an instance of the class, the constructor with the matching parameter list is called:
```typescript
let myInstance1 = new MyClass(10);
let myInstance2 = new MyClass(10, "Hello");
```
Note that, similar to function overloading, we only have one implementation of the consructor and it's the only the signature that is overloaded.
Learn more from the following resources:
- [Constructors - TypeScript](https://www.typescriptlang.org/docs/handbook/2/classes.html#constructors)
- [Constructors - TypeScript](https://www.typescriptlang.org/docs/handbook/2/classes.html#constructors)