function io.load(file_path)
local f, e = io.open(file_path:string(), 'rb')
if not f then
return nil, e
end
local buf = f:read 'a'
f:close()
return buf
end
function io.save(file_path, content)
local f, e = io.open(file_path:string(), "wb")
if f then
f:write(content)
f:close()
return true
else
return false, e
end
end