[Lua] Print table contents recursively

gistfile1.lua

-- Print contents of `tbl`, with indentation.
-- `indent` sets the initial level of indentation.
function tprint (tbl, indent)
  if not indent then indent = 0 end
  for k, v in pairs(tbl) do
    formatting = string.rep("  ", indent) .. k .. ": "
    if type(v) == "table" then
      print(formatting)
      tprint(v, indent+1)
    else
      print(formatting .. v)
    end
  end
end

if there's a "boolean" value in the table the "print(formatting .. v)" fails.
https://gist.github.com/ripter/4270799
this is the same solution I came by

Other values also may fail to concat with string. Use tostring(v).
https://gist.github.com/xytis/5361405

This is what I've been using. Real handy for understanding arbitrary nested stuff.
The Code: https://gist.github.com/stuby/5445834#file-rprint-lua
An example: https://gist.github.com/stuby/5445834#file-rprint-example-txt

marked

• Avoid extracting already-printed tables to prevent infinite loop for self-referential tables such as _G
• Format strings like literals to improve readability and preserve indentation

https://gist.github.com/Phroneris/56c1edaf3186b09d289184b8188098a4