--[[
Extensions that don't belong anywhere else
]]

-- Override tostring to display more info about the table
local old_tostring = tostring
local numtabs = 0
local printed_tables = {}
function tostring(el)
	if type(el) == "table" and printed_tables[el] == nil then
		printed_tables[el] = true
		numtabs = numtabs + 1
		local strbuilder = {"{"}
		for k,v in pairs(el) do
			strbuilder[#strbuilder + 1] = string.format("%s%s : %s", string.rep("\t",numtabs), tostring(k), tostring(v))
		end
		printed_tables[el] = nil
		strbuilder[#strbuilder + 1] = string.rep("\t",numtabs - 1) .. "}"
		numtabs = numtabs - 1
		return table.concat(strbuilder,"\n")
	end
	return old_tostring(el)
end

--functions to save my hand
function assertf(bool,msg,...)
	if not bool then
		error(string.format(msg,...),2)
	end
end

function errorf(fmt,...)
	error(string.format(fmt,...),2)
end

function printf(fmt,...)
	print(string.format(fmt,...))
end