tenderlove

cons = lambda { |a, b|
  lambda { |m| m.call(a, b) }
}

car = lambda { |m| m.call(lambda { |a, _| a }) }
cdr = lambda { |m| m.call(lambda { |_, b| b }) }

# A list that only uses lambdas

list = cons.call(1, cons.call(2, cons.call(3, nil)))

rf-

To compile with Homebrew-installed LLVM:

PATH=/usr/local/opt/llvm/bin:$PATH crystal build crystal-tags.cr

datanoise

require "compiler/crystal/**"
require "option_parser"

include Crystal

class ToCtagsVisitor < Visitor
  @filename : String
  @lines : Array(String)
  @io : IO
  @opts : Generator

asterite

record Cell, car, cdr

alias List = Nil | (-> Cell)

def inf(x = 0)
  inf :: -> Cell
  inf = -> { Cell.new(x, inf) }
end

def nat(x = 0)