numbers::binary operations - using bitwise operator & niceness
numbers::binary operations - extra comments
numbers::binary operations - you should be able to find the value of a given bit
ascync behaviour: you should understand how to use promises to handle asynchronicity
you should be able to receive data from the server and manipulate it
async official solution
regex: you should be able to detect a repeating letter in a string
regex: compare my code with solutions
functions: compare solutions to my code
arrays: you should be able to remove a value from an array, returning the original array; refactor remove()
arrays: compare my solution to the official solution