net: removed 'tostring' for numbers

widgets/mem.lua

@@ -13,9 +13,7 @@ local wibox           = require("wibox")
 
 local io              = { lines  = io.lines }
 local math            = { floor  = math.floor }
-local string          = { format = string.format,
-                          gmatch = string.gmatch,
-                          len    = string.len }
+local string          = { gmatch = string.gmatch }
 
 local setmetatable    = setmetatable
 

widgets/net.lua

@@ -14,7 +14,6 @@ local naughty      = require("naughty")
 local wibox        = require("wibox")
 
 local io           = { popen  = io.popen }
-local tostring     = tostring
 local string       = { format = string.format,
                        gsub   = string.gsub,
                        match  = string.match }
@@ -71,10 +70,10 @@ local function worker(args)
         local now_r = helpers.first_line('/sys/class/net/' .. iface ..
                                            '/statistics/rx_bytes') or 0
 
-        net_now.sent = tostring((now_t - net.last_t) / timeout / units)
+        net_now.sent = (now_t - net.last_t) / timeout / units
         net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
 
-        net_now.received = tostring((now_r - net.last_r) / timeout / units)
+        net_now.received = (now_r - net.last_r) / timeout / units
         net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
 
         widget = net.widget

widgets/sysload.lua

@@ -12,8 +12,7 @@ local newtimer     = require("lain.helpers").newtimer
 local wibox        = require("wibox")
 
 local io           = { open = io.open }
-local string       = { format = string.format,
-                       match  = string.match }
+local string       = { match  = string.match }
 
 local setmetatable = setmetatable