1 files changed, 6 insertions, 11 deletions
diff --git a/var b/var
index 08b75b6..30c638a 100755
--- a/var
+++ b/var
@@ -3,13 +3,8 @@
 require 'trollop'
 
 
-def usage
-  STDERR.write "./stddev [-r <d>] < <one number per line>\n"
-  exit 1
-end
-usage if not [0,2].include? ARGV.size
-
-opts = Trollop::options do
+cfg = Trollop::options do
+  banner "stddev [-r <d>] < <one number per line>"
   opt :round, "Number of digits after decimal point.", :type => :int, :default => -1
 end
 
@@ -18,10 +13,10 @@ sum = 0.0
 i = 0
 cached = []
 while line=STDIN.gets
-  v = line.strip.to_f
+  v = line.to_f
   sum += v
   cached << v
-  i +=1 
+  i +=1
 end
 
 avg = sum/i.to_f
@@ -31,8 +26,8 @@ cached.each { |v|
   var += (avg - v)**2
 }
 
-if opts[:round] >= 0 
-  puts var.round opts[:round]
+if cfg[:round] >= 0
+  puts var.round cfg[:round]
 else
   puts var
 end