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An Advent Of Code runner for gleam

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gladvent src gladvent internal util.gleam
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src/gladvent/internal/util.gleam 

import gleam/erlang/charlist.{type Charlist}

import gleam/float

import gleam/int

import gleam/list

import gleam/set



pub fn defer(do later: fn() -> _, after now: fn() -> a) -> a {

  let res = now()

  later()

  res

}



pub fn deduplicate_sort(l: List(Int)) -> List(Int) {

  l |> set.from_list |> set.to_list |> list.sort(int.compare)

}



@external(erlang, "timer", "tc")

pub fn timed(fun: fn() -> a) -> #(Int, a)



pub fn format_float(input: Float, precision: Int) -> String {

  case precision {

    p if p >= 1 ->

      do_format("~." <> int.to_string(precision) <> "f", [input])

      |> charlist.to_string

    _ -> float.truncate(input) |> int.to_string

  }

}



@external(erlang, "io_lib", "format")

fn do_format(format: String, data: List(a)) -> Charlist