dont export types (golint)

examples/sorting-by-functions/sorting-by-functions.go

@@ -13,7 +13,7 @@ import "fmt"
 // corresponding type. Here we've created a `ByLength`
 // type that is just an alias for the builtin `[]string`
 // type.
-type ByLength []string
+type byLength []string
 
 // We implement `sort.Interface` - `Len`, `Less`, and
 // `Swap` - on our type so we can use the `sort` package's
@@ -22,22 +22,22 @@ type ByLength []string
 // hold the actual custom sorting logic. In our case we
 // want to sort in order of increasing string length, so
 // we use `len(s[i])` and `len(s[j])` here.
-func (s ByLength) Len() int {
+func (s byLength) Len() int {
     return len(s)
 }
-func (s ByLength) Swap(i, j int) {
+func (s byLength) Swap(i, j int) {
     s[i], s[j] = s[j], s[i]
 }
-func (s ByLength) Less(i, j int) bool {
+func (s byLength) Less(i, j int) bool {
     return len(s[i]) < len(s[j])
 }
 
 // With all of this in place, we can now implement our
 // custom sort by casting the original `fruits` slice to
-// `ByLength`, and then use `sort.Sort` on that typed
+// `byLength`, and then use `sort.Sort` on that typed
 // slice.
 func main() {
     fruits := []string{"peach", "banana", "kiwi"}
-    sort.Sort(ByLength(fruits))
+    sort.Sort(byLength(fruits))
     fmt.Println(fruits)
 }