use aiken/list

test tuple_when() {
  let items =
    [(#"", #"", 50), (#"aa", #"bb", 70)]

  let amount = 70
  let policy = #"aa"

  let filtered =
    list.filter(
      items,
      fn(item) {
        when item is {
          (token_policy, _, token_amount) ->
            amount == token_amount && policy == token_policy
          _ -> False
        }
      },
    )
  list.length(filtered) > 0
}