🤔

helloworld.pkl

class Software {
  local Semver = (str: String) ->
    str.matches(Regex(#"^\#(IntStr)\.\#(IntStr)\.\#(IntStr)$"#))
  local IntStr = #"(0|[1-9]\d*)"#

  local function greet(name: String): String = "Hello, \(name) world!"

  name: String(length > 0)
  version: String(Semver)
  message: String = greet(name)
}

solutions: Listing<Software> = new {
  new {
    name = "Pkl"
    version = "0.25.1"
  }
}

/*
 * {
 *   "solutions": [
 *     {
 *       "name": "Pkl",
 *       "version": "0.25.1",
 *       "message": "Hello, Pkl world!"
 *     }
 *   ]
 * }
 */

• https://pkl-lang.org/main/current/language-reference/index.html