code review 850041: single argument panic

doc/progs/sortmain.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package main
 
 import (
         "fmt"
         "sort"
 )
@@ skipping 10 matching lines @@
 func strings() {
         data := []string{"monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"}
         a := sort.StringArray(data)
         sort.Sort(a)
         if !sort.IsSorted(a) {
                 panic("fail")
         }
 }
 
 type day struct {
-        num       int
-        shortName string
-        longName  string
+        num        int
+        shortName  string
+        longName   string
 }
 
 type dayArray struct {
         data []*day
 }
 
-func (p *dayArray) Len() int           { return len(p.data) }
-func (p *dayArray) Less(i, j int) bool { return p.data[i].num < p.data[j].num }
-func (p *dayArray) Swap(i, j int)      { p.data[i], p.data[j] = p.data[j], p.data[i] }
+func (p *dayArray) Len() int            { return len(p.data) }
+func (p *dayArray) Less(i, j int) bool  { return p.data[i].num < p.data[j].num }
+func (p *dayArray) Swap(i, j int)       { p.data[i], p.data[j] = p.data[j], p.data[i] }
 
 func days() {
-        Sunday := day{0, "SUN", "Sunday"}
-        Monday := day{1, "MON", "Monday"}
-        Tuesday := day{2, "TUE", "Tuesday"}
+        Sunday :=    day{0, "SUN", "Sunday"}
+        Monday :=    day{1, "MON", "Monday"}
+        Tuesday :=   day{2, "TUE", "Tuesday"}
         Wednesday := day{3, "WED", "Wednesday"}
-        Thursday := day{4, "THU", "Thursday"}
-        Friday := day{5, "FRI", "Friday"}
-        Saturday := day{6, "SAT", "Saturday"}
+        Thursday :=  day{4, "THU", "Thursday"}
+        Friday :=    day{5, "FRI", "Friday"}
+        Saturday :=  day{6, "SAT", "Saturday"}
         data := []*day{&Tuesday, &Thursday, &Wednesday, &Sunday, &Monday, &Friday, &Saturday}
         a := dayArray{data}
         sort.Sort(&a)
         if !sort.IsSorted(&a) {
                 panic("fail")
         }
         for _, d := range data {
                 fmt.Printf("%s ", d.longName)
         }
         fmt.Printf("\n")
 }
 
 
 func main() {
         ints()
         strings()
         days()
 }