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Parts and Multi-Part Output

Organize solutions into labeled parts — perfect for Advent of Code.

The `part` keyword prints a labeled result. It takes a part number and a block that computes the answer.

let nums = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

part 1
	nums | sum

part 2
	nums | product

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Here's a complete Advent of Code-style solution using parts, pipes, and parsing.

let data = "1000\n2000\n3000\n\n4000\n\n5000\n6000\n\n7000\n8000\n9000\n\n10000"

let totals = data | split "\n\n" | map g ->
	g | ints | sum

part 1
	totals | max

part 2
	totals | order_by -? | take 3 | sum

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