aoc-23-01-1.pkl

local digits = "0123456789"

function getFirstNumber(s, currPos) = if (digits.contains(s[currPos])) s[currPos] else getFirstNumber(s, currPos + 1)
function getLastNumber(s, currPos) = if (digits.contains(s[currPos])) s[currPos] else getLastNumber(s, currPos - 1)

function getNumber(s) = (getFirstNumber(s, 0) + getLastNumber(s, s.length - 1)).toInt()

aoc {
  example_01 = read("file:aoc-23-01-1.txt").text.split("\n").map((x) -> getNumber(x)).fold(0, (x, y) -> x + y)
  answer = read("file:aoc-23-01-1-real.txt").text.split("\n").map((x) -> getNumber(x)).fold(0, (x, y) -> x + y)
}

// output {
//   value = aoc.answer
// }