sbool loadFunctions_debug;
static O loadFunctions_veryQuickJava;

static Class loadFunctions(S... functions) {
  ret loadFunctions(asList(functions));
}

static Class loadFunctions(Collection<S> functions, O... _) {
  print("Compiling " + joinWithPlus(functions));
  TreeSet<S> functionSet = new TreeSet<S>(functions);
  StringBuilder buf = stringBuilder(appendNewLineIfNempty(stringPar header(_)));
  for (S s : functionSet)
    buf.append("please include function " + assertIdentifier(s) + ".\n");
  long time = sysNow();
  Class c;
  if (loadFunctions_veryQuickJava != null)
    c = (Class) callF(loadFunctions_veryQuickJava, str(buf));
  else {
    veryQuickJava_transpiled.set(""); // request transpilation
    c = veryQuickJava(str(buf));
    saveTranspiledStandardFunctions(functionSet, getAndClearThreadLocal(veryQuickJava_transpiled));
  }
  if (loadFunctions_debug)
    done2_always(time, "loadFunctions: " + join(" ", functions));
  ret c;
}