Is there any better way to golf this (other than removing newlines/indentation)?

  local c=s(a,b)
  local d=c
  for i,v in ipairs{...} do d=d:push(v) end
  return c

I'm particularly bothered by the double local usage, but as Lua does not have multiple assignment, and I cannot use function parameters to declare the locals, I can't see a way to remove them.

For those who care, this is the implementation of the __call metamethod in my quick hack of a linked-list ~class used in this answer.

  • \$\begingroup\$ Lua does have multiple assignment: lua.org/manual/5.1/manual.html#2.4.3 \$\endgroup\$
    – nolan
    Aug 26, 2016 at 23:39
  • \$\begingroup\$ That's parallel, assignment, though. See this question. You cannot use it to share values. \$\endgroup\$
    – Phrogz
    Aug 26, 2016 at 23:40
  • 1
    \$\begingroup\$ Could you perhaps declare both variables in the same line and then do assignment later? Like local c,d=s({v=b},a),0 d=c? That takes out one of the local keywords. I don't know anything about Lua, though. \$\endgroup\$
    – Value Ink
    Aug 26, 2016 at 23:45
  • \$\begingroup\$ Yes that can be done. \$\endgroup\$
    – nolan
    Aug 26, 2016 at 23:49
  • \$\begingroup\$ @ValueInk Post that as an answer! Note that you don't need the ,0. \$\endgroup\$
    – Phrogz
    Aug 27, 2016 at 0:55

1 Answer 1


As requested in the comments, here it is as an answer.

local c,d=s(a,b)  -- d is nil

This saves you one local declaration, should give you -5 bytes.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.