Brook

Brook is toy functional programming language.

Brook programs are compose of left-associative binary, unary and nullary functions which support partial application, allowing for flexible function composition.

Installation

git clone https://github.com/fergcb/brook
cd brook
npm i -g

Usage

brook run aoc/01a.brk

Here are the contents of aoc/01a.brk:

"aoc/input/01.txt" readFile lines
map (
  chars
  filter (isDigit)
  pick [0 -1]
  join ""
  toInt
)
sum

An explicitly parenthesised version of this code would look like the following:

(
  (
    (
      ("aoc/input/01.txt" readFile) lines
    ) map (
      (
        (
          (
            (chars) filter (isDigit)
          ) pick [0 -1]
        ) join ""
      ) toInt
    )
  ) sum
)