Cartesian Products

The `*` operator on two lists produces their cartesian product — every pairing of an element from the left with an element from the right.

[1, 2, 3] * [10, 20] | print

This is a powerful way to brute-force search over all pairs. Combine it with `find` or `where` to solve problems concisely.

-- Two Sum: find two numbers that add to 9
let nums = [2, 7, 11, 15]
nums * nums
	| find ?[0] + ?[1] == 9
	| print

You can also use `*` with an integer to repeat a list.

[1, 2, 3] * 3 | print
"ab" | chars | repeat 4 | print