Change cache interface to use internal Len method

Eero Norri · Eero Norri · commit 3621c3330786 · 2023-08-07T12:47:41.000+03:00
diff --git a/cache.go b/cache.go
@@ -257,7 +257,9 @@ func (c *Cache[K, V]) Delete(key K) {
 
 // Len returns the number of items in the cache.
 func (c *Cache[K, V]) Len() int {
-	return len(c.Keys())
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	return c.cache.Len()
 }
 
 // Contains reports whether key is within cache.

Original file line number	Diff line number	Diff line change
`@@ -257,7 +257,9 @@ func (c *Cache[K, V]) Delete(key K) {`
`257`	`257`
`258`	`258`	`// Len returns the number of items in the cache.`
`259`	`259`	`func (c *Cache[K, V]) Len() int {`
`260`		`- return len(c.Keys())`
	`260`	`+ c.mu.Lock()`
	`261`	`+ defer c.mu.Unlock()`
	`262`	`+ return c.cache.Len()`
`261`	`263`	`}`
`262`	`264`
`263`	`265`	`// Contains reports whether key is within cache.`