Can I define a fixed-length array property in Typescript?
For example:
//example code , not my actual case but similar
export type Car = {
doors:Door[]; //I want this to be exactly 4 doors
/// rest of code
}
I attempted the following:
export type Pattern = {
doors: Array<Door>[4];
////
};
However, this resulted in (property) doors: Door instead of an array of four Door objects.
Any suggestions on how to achieve this fixed-length array in Typescript?
Both Javascript and typescript allow you to create a fixed-size Array using the new keyword.
For example:
let arr: number[] = new Array(3);
However, in your specific scenario, you can utilize a tuple type to achieve this.
export type Car = {
doors: [Door, Door, Door, Door];
};
// Implementation
let car: Car = {
doors: [
// fill array as needed
]
};
const arr = new Array (3);
arr[0] = 'door1';
arr[1] = 'door2';
arr[2] = 'door3';
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