func ExampleHandle() {
c := cache.New(1)
defer c.Close()
type Value struct {
V string
}
todoList := make(chan *cache.LRUHandle, 1)
h1 := c.Insert("100", &Value{V: "101"}, 1, func(key string, value interface{}) {
fmt.Printf("deleter(%q, %q)\n", key, value.(*Value).V)
value.(*Value).V = "nil"
})
fmt.Printf("h1: %s\n", h1.(*cache.LRUHandle).Value().(*Value).V)
todoList <- h1.(*cache.LRUHandle).Retain()
h1.Close()
c.Erase("100")
h2 := <-todoList
fmt.Printf("h2: %s\n", h2.Value().(*Value).V)
h2.Close()
// Output:
// h1: 101
// h2: 101
// deleter("100", "101")
}
func ExampleCache() {
c := cache.New(100)
defer c.Close()
v1 := "101"
h1 := c.Insert("100", v1, 1, func(key string, value interface{}) {
fmt.Printf("deleter(%q, %q)\n", key, value.(string))
})
fmt.Printf("v1: %s\n", v1)
h1.Close()
v, h2, ok := c.Lookup("100")
if !ok {
log.Fatal("lookup failed!")
}
defer h2.Close()
// h2 still valid after Erase
c.Erase("100")
v2 := v.(string)
fmt.Printf("v2: %s\n", v2)
// but new lookup will failed
if _, _, ok := c.Lookup("100"); ok {
log.Fatal("lookup succeed!")
}
fmt.Println("Done")
// Output:
// v1: 101
// v2: 101
// Done
// deleter("100", "101")
}
