Function repeat

repeat<T>(count: number, closure: (index: number) => T): T[]

Executes a function a specified number of times and collects the results into an array.

A synchronous repetition function that executes the given function for each index (from 0 to count-1) and collects the results into an array.

Type Parameters

T
The type of the result from each execution

Parameters

count: number
The number of times to repeat (non-negative integer)
closure: (index: number) => T
The function to execute repeatedly

Returns T[]

An array of results

Example

  // Generate an array of squares from 1 to 5
  const squares = ArrayUtil.repeat(5, index => (index + 1) ** 2);
  console.log(squares); // [1, 4, 9, 16, 25]

  // Generate an array of default user objects
  const users = ArrayUtil.repeat(3, index => ({
  id: index + 1,
  name: `User${index + 1}`,
  email: `user${index + 1}@example.com`
  }));
  console.log(users);
  // [
  //   { id: 1, name: 'User1', email: 'user1@example.com' },
  //   { id: 2, name: 'User2', email: 'user2@example.com' },
  //   { id: 3, name: 'User3', email: 'user3@example.com' }
  // ]