func (c *cache) Set(k string, x interface{}, d time.Duration) {
	// "Inlining" of set
	var e int64
	if d == DefaultExpiration {
		d = c.defaultExpiration
	}
	if d > 0 {
		e = time.Now().Add(d).UnixNano()
	}
	c.mu.Lock()
	c.items[k] = Item{
		Object:     x,
		Expiration: e,
	}
	// TODO: Calls to mu.Unlock are currently not deferred because defer
	// adds ~200 ns (as of go1.)
	c.mu.Unlock()
}
func (c *cache) Set(k string, x interface{}, d time.Duration) {
	
	var e int64
	if d == DefaultExpiration {
		d = c.defaultExpiration
	}
	if d > 0 {
		e = time.Now().Add(d).UnixNano()
	}
	c.mu.Lock()
	c.items[k] = Item{
		Object:     x,
		Expiration: e,
	}
	
	
	c.mu.Unlock()
}
func ( c * cache ) Set ( k string , x interface { } , d time . Duration ) { // "Inlining" of set var e int64 if d == DefaultExpiration { d = c . defaultExpiration } if d > 0 { e = time . Now ( ) . Add ( d ) . UnixNano ( ) } c . mu . Lock ( ) c . items [ k ] = Item { Object : x , Expiration : e , } // TODO: Calls to mu.Unlock are currently not deferred because defer // adds ~200 ns (as of go1.) c . mu . Unlock ( ) }
// Add an item to the cache, replacing any existing item. If the duration is 0
// (DefaultExpiration), the cache's default expiration time is used. If it is -1
// (NoExpiration), the item never expires.
Add an item to the cache replacing any existing item . If the duration is 0 ( DefaultExpiration ) the cache s default expiration time is used . If it is - 1 ( NoExpiration ) the item never expires .