#72 Initialize the eestatuses, lookingfor, indextable, and statuscode using make()

Author: azumakuniyuki

smtp/status/find.go

@@ -23,19 +23,19 @@ func Find(argv1 string, argv2 string) string {
 	if len(argv2) < 1 { argv2 = " " }
 
 	givenclass := argv2[0:1]
-	eestatuses := []string{}
+	eestatuses := make([]string, 0, 3)
 	esmtperror := " " + argv1 + "   " // Why 3 space characters? see https://github.com/sisimai/p5-sisimai/issues/574
-	lookingfor := map[string]string{}
-	indextable := []int{}
+	lookingfor := make(map[string]string, 10)
+	indextable := make([]int, 0, 10)
 	ip4address := rfc791.FindIPv4Address(&esmtperror)
 
 	if givenclass == "2" || givenclass == "4" || givenclass == "5" {
 		// The second argument is a valid value
-		eestatuses = []string{givenclass + "."}
+		eestatuses = append(eestatuses, givenclass + ".")
 
 	} else {
 		// The second argument has not been specified or an invalid value
-		eestatuses = []string{"5.", "4.", "2."}
+		eestatuses = append(eestatuses, []string{"5.", "4.", "2."}...)
 	}
 
 	// Rewrite an IPv4 address in the given string(argv1) with '***.***.***.***'
@@ -54,8 +54,8 @@ func Find(argv1 string, argv2 string) string {
 	}
 	if len(lookingfor) == 0 { return "" }
 
-	statuscode := []string{} // List of SMTP Status Code, Keep the order of appearances
-	anotherone := ""         // Alternative code
+	statuscode := make([]string, 0, 2) // List of SMTP Status Code, Keep the order of appearances
+	anotherone := ""                   // Alternative code
 	stringsize := len(esmtperror)
 
 	sort.Slice(indextable, func(a, b int) bool { return indextable[a] < indextable[b] })