Code cleanup...

remove Public status of bitmask constants
	move string slice initialization into function declaration

secret_handshake.go

@@ -1,24 +1,23 @@
-// Package secret converts an integer value into a secret phrase
+// Package secret converts an integer value into a secret phrase.
 package secret
 
 // Define friendly names for the bitmasks.
 const (
-	WINK    int = 1 << iota // 00001
-	BLINK                   // 00010
-	CLOSE                   // 00100
-	JUMP                    // 01000
-	REVERSE                 // 10000
+	wnk int = 1 << iota // 00001
+	bli                 // 00010
+	clo                 // 00100
+	jmp                 // 01000
+	rev                 // 10000
 )
 
 // Handshake receives an integer argument and returns a string slice with
 // the code words in the proper sequence.
-func Handshake(i int) []string {
-	var h []string
+func Handshake(i int) (h []string) {
 	m := map[int]string{
-		WINK:  "wink",
-		BLINK: "double blink",
-		CLOSE: "close your eyes",
-		JUMP:  "jump",
+		wnk: "wink",
+		bli: "double blink",
+		clo: "close your eyes",
+		jmp: "jump",
 	}
 
 	// Return the original empty slice if the integer is negative.
@@ -27,12 +26,12 @@ func Handshake(i int) []string {
 	}
 
 	// Pre-define the ordered key sets.
-	keys := []int{WINK, BLINK, CLOSE, JUMP}
-	rev := []int{JUMP, CLOSE, BLINK, WINK}
+	keys := []int{wnk, bli, clo, jmp}
+	bkwd := []int{jmp, clo, bli, wnk}
 
-	// Use the reversed key set if the REVERSE bit is set.
-	if i&REVERSE != 0 {
-		keys = rev
+	// Use the reversed key set if the 5th bit is set.
+	if i&rev != 0 {
+		keys = bkwd
 	}
 
 	// Build the string slice based on the bitmask.