bin/instrument_server in instrumental_tools-0.5.0 vs bin/instrument_server in instrumental_tools-0.5.1

@@ -151,14 +151,15 @@
       output
     end
 
     def self.cpu
       categories = [:user, :nice, :system, :idle, :iowait]
-      values = `cat /proc/stat | grep cpu[^0-9]`.chomp.split(/\s+/).slice(1, 5).map(&:to_f)
+      values = `cat /proc/stat | grep cpu[^0-9]`.chomp.split(/\s+/).slice(1, 5).map { |v| v.to_f }
       SystemInspector.memory.store(:cpu_values, values.dup)
       if previous_values = SystemInspector.memory.retrieve(:cpu_values)
-        values.map!.with_index { |value, index| (previous_values[index] - value).abs }
+        index = -1
+        values.collect!{ |value| (previous_values[index += 1] - value).abs }
       end
       data = Hash[*categories.zip(values).flatten]
       total = values.inject { |memo, value| memo + value }
 
       output = {}
@@ -253,10 +254,10 @@
     def self.load_filesystem
       { :gauges => filesystem }
     end
 
     def self.filesystem
-      allocated, unused, max = `sysctl fs.file-nr`.split[-3..-1].map(&:to_i)
+      allocated, unused, max = `sysctl fs.file-nr`.split[-3..-1].map { |v| v.to_i }
       open_files = allocated - unused
       { 'filesystem.open_files' => open_files,
         'filesystem.max_open_files' => max,
         'filesystem.open_files_pct_max' => (open_files.to_f / max.to_f) * 100,
       }