use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>
This commit is contained in:
hongming
2019-03-12 15:47:56 +08:00
parent b59c244ca2
commit 4144404b0b
1110 changed files with 161100 additions and 14519 deletions

View File

@@ -36,7 +36,7 @@ func NewLRU(size int, onEvict EvictCallback) (*LRU, error) {
return c, nil
}
// Purge is used to completely clear the cache.
// Purge is used to completely clear the cache
func (c *LRU) Purge() {
for k, v := range c.items {
if c.onEvict != nil {
@@ -47,8 +47,8 @@ func (c *LRU) Purge() {
c.evictList.Init()
}
// Add adds a value to the cache. Returns true if an eviction occurred.
func (c *LRU) Add(key, value interface{}) (evicted bool) {
// Add adds a value to the cache. Returns true if an eviction occured.
func (c *LRU) Add(key, value interface{}) bool {
// Check for existing item
if ent, ok := c.items[key]; ok {
c.evictList.MoveToFront(ent)
@@ -78,18 +78,17 @@ func (c *LRU) Get(key interface{}) (value interface{}, ok bool) {
return
}
// Contains checks if a key is in the cache, without updating the recent-ness
// Check if a key is in the cache, without updating the recent-ness
// or deleting it for being stale.
func (c *LRU) Contains(key interface{}) (ok bool) {
_, ok = c.items[key]
return ok
}
// Peek returns the key value (or undefined if not found) without updating
// Returns the key value (or undefined if not found) without updating
// the "recently used"-ness of the key.
func (c *LRU) Peek(key interface{}) (value interface{}, ok bool) {
var ent *list.Element
if ent, ok = c.items[key]; ok {
if ent, ok := c.items[key]; ok {
return ent.Value.(*entry).value, true
}
return nil, ok
@@ -97,7 +96,7 @@ func (c *LRU) Peek(key interface{}) (value interface{}, ok bool) {
// Remove removes the provided key from the cache, returning if the
// key was contained.
func (c *LRU) Remove(key interface{}) (present bool) {
func (c *LRU) Remove(key interface{}) bool {
if ent, ok := c.items[key]; ok {
c.removeElement(ent)
return true
@@ -106,7 +105,7 @@ func (c *LRU) Remove(key interface{}) (present bool) {
}
// RemoveOldest removes the oldest item from the cache.
func (c *LRU) RemoveOldest() (key interface{}, value interface{}, ok bool) {
func (c *LRU) RemoveOldest() (interface{}, interface{}, bool) {
ent := c.evictList.Back()
if ent != nil {
c.removeElement(ent)
@@ -117,7 +116,7 @@ func (c *LRU) RemoveOldest() (key interface{}, value interface{}, ok bool) {
}
// GetOldest returns the oldest entry
func (c *LRU) GetOldest() (key interface{}, value interface{}, ok bool) {
func (c *LRU) GetOldest() (interface{}, interface{}, bool) {
ent := c.evictList.Back()
if ent != nil {
kv := ent.Value.(*entry)

View File

@@ -1,36 +0,0 @@
package simplelru
// LRUCache is the interface for simple LRU cache.
type LRUCache interface {
// Adds a value to the cache, returns true if an eviction occurred and
// updates the "recently used"-ness of the key.
Add(key, value interface{}) bool
// Returns key's value from the cache and
// updates the "recently used"-ness of the key. #value, isFound
Get(key interface{}) (value interface{}, ok bool)
// Check if a key exsists in cache without updating the recent-ness.
Contains(key interface{}) (ok bool)
// Returns key's value without updating the "recently used"-ness of the key.
Peek(key interface{}) (value interface{}, ok bool)
// Removes a key from the cache.
Remove(key interface{}) bool
// Removes the oldest entry from cache.
RemoveOldest() (interface{}, interface{}, bool)
// Returns the oldest entry from the cache. #key, value, isFound
GetOldest() (interface{}, interface{}, bool)
// Returns a slice of the keys in the cache, from oldest to newest.
Keys() []interface{}
// Returns the number of items in the cache.
Len() int
// Clear all cache entries
Purge()
}