From e37fe3618c8026d47d97a4c55b17599245d8144c Mon Sep 17 00:00:00 2001
From: Joao Pedrosa <joaopedrosa@gmail.com>
Date: Sat, 26 Nov 2011 21:10:43 -0300
Subject: [PATCH] Optimized the Go version a little.

---
 luhny.go | 16 +++++++++-------
 mask.sh  |  4 ++--
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/luhny.go b/luhny.go
index 221db11..9b4ee8f 100644
--- a/luhny.go
+++ b/luhny.go
@@ -125,26 +125,28 @@ func sampleTest() {
 func (lu Luhn) TapStdin() {
   nRepeats := 1
   if len(os.Args) > 1 { nRepeats, _ = strconv.Atoi(os.Args[1]) }
-  ios := bufio.NewReader(os.Stdin)
+  ios, _ := bufio.NewReaderSize(os.Stdin, 16384)
+  bw, _ := bufio.NewWriterSize(os.Stdout, 16384)
   if nRepeats > 1 {
-    s, err := ios.ReadBytes('\n')
+    s, err := ios.ReadSlice('\n')
     lines := []string{}
     for err == nil {
       lines = append(lines, string(s))
-      s, err = ios.ReadBytes('\n')
+      s, err = ios.ReadSlice('\n')
     }
     for i := 0; i < nRepeats; i++ {
       for _, s := range lines {
-        fmt.Print(lu.Mask(s))
+        bw.WriteString(lu.Mask(s))
       }
     }
   } else {
-    s, err := ios.ReadBytes('\n')
+    s, err := ios.ReadSlice('\n')
     for err == nil {
-      fmt.Print(lu.Mask(string(s)))
-      s, err = ios.ReadBytes('\n')
+      bw.WriteString(lu.Mask(string(s)))
+      s, err = ios.ReadSlice('\n')
     }
   }
+  bw.Flush()
 }
 
 func main() {
diff --git a/mask.sh b/mask.sh
index ae841a3..419fe2c 100755
--- a/mask.sh
+++ b/mask.sh
@@ -3,5 +3,5 @@
 # Call your program here instead of cat.
 #cat
 #./luhny.rb
-./luhny.dart
-#./goluhny
+#./luhny.dart
+./goluhny