Return array in TypeScript

In TypeScript, an array is a collection of elements of the same type. To return an array in TypeScript, we can define a function that takes some input arguments, processes them, and returns an array as its output.

Here is an example of a function that returns an array of string values:

function getNames(): string[] {
  const names: string[] = ["Alice", "Bob", "Charlie"];
  return names;
}
const names: string[] = getNames();

console.log(names); // ["Alice", "Bob", "Charlie"]

In this example, the getNames() function defines an array variable called names and initializes it with three string values. The function then returns this array using the return keyword. The return type of this function is specified as string[], which indicates that the function will return an array of strings.

To call this function and get the returned array, we define another variable called names, and set it equal to a call to the getNames() function. We can then log out the names array to the console using the console.log() function.

Note that we can also define the array variable inline with the function return statement, like this:

function getNames(): string[] {
  return ["Alice", "Bob", "Charlie"];
}

This is a shorthand way to define and return an array at the same time in TypeScript.