kit

hello.lua (1151B)

---

 -- Deterministic Lua script run by the interpreter built from the Lua sources.
 -- Exercises tables, string formatting, closures, coroutines, pcall, and math.
 
 -- string.format goes through the host snprintf; fixed values keep it stable.
 print(string.format("fmt %d %.3f %s", 42, 2.5, ("ab"):rep(3)))
 
 -- table build + sort + concat
 local t = {}
 for i = 1, 8 do t[i] = (i * 7) % 11 end
 table.sort(t)
 print("sorted: " .. table.concat(t, ","))
 
 -- closure / counter
 local function counter()
   local n = 0
   return function() n = n + 1; return n end
 end
 local c = counter()
 print("counter: " .. c() .. c() .. c())
 
 -- coroutine producing a fixed sequence
 local co = coroutine.wrap(function()
   for i = 1, 4 do coroutine.yield(i * i) end
 end)
 print("coro: " .. co() .. "," .. co() .. "," .. co() .. "," .. co())
 
 -- protected call over an error
 local ok, err = pcall(function() error("boom") end)
 print("pcall: " .. tostring(ok) .. " " .. (err:match("boom") or "?"))
 
 -- integer / float math (Lua 5.4 has a real integer subtype)
 print(string.format("math %d %d %.4f", 7 // 2, 2 ^ 10, math.sqrt(2)))
 print("type: " .. math.type(3) .. "/" .. math.type(3.0))