list from

Ideas and Concepts

11. what is Composition? create a pipe()

12. implement Immutability helper

14. Implement a general memoization function - `memo()`

15. implement a simple DOM wrapper to support method chaining like jQuery

46. implement `_.once()`

52. create a middleware system

56. call APIs with pagination

64. auto-retry Promise on rejection

117. event delegation

122. implement memoizeOne()