Nscache Novice asks to fly with

Nscache is a system-provided cache that is similar to a collection (nsmutabledictionary), Nscache has the ability to automatically delete to reduce the memory consumed by the system.

Here is a simple click event using the cache:

-(void) Touchesbegan: (Nsset<uitouch *> *) touches withevent: (Uievent *) Event {

Classes used by the system for caching

Nscache * cache = [[Nscache alloc] init];

Totalcostlimit Setting the cache size

Set the number of caches, clear the cache first

Cache.countlimit = 5;

for (Nsinteger i = 0; i <; i + +) {

[Cache setobject:[nsstring stringwithformat:@ "Cache-%@", @ (i)] forkey:@ (i)];

}

for (Nsinteger i = 0; i <; i + +) {

NSLog (@ "%@", [Cache objectforkey:@ (i)]);

}

}

Who is not in the cache

-(void) cache: (Nscache *) cache Willevictobject: (id) obj {

NSLog (@ "%@", obj);

}

Here are some Nscache properties and methods, and if there is no special case, use the system's Nscache, which is better:

@property Nsuinteger Totalcostlimit;

Setting the amount of memory consumed by the cache is not a strict limit, and when the total exceeds the value set by Totalcostlimit, the system clears a portion of the cache until the total consumption is lower than the Totalcostlimit value.

@property Nsuinteger Countlimit;

Setting the size of the cache object is not a strict limitation.

-(ID) Objectforkey: (ID) key;

Gets the cache object, based on the Key-value

-(void) SetObject: (ID) obj Forkey: (id) key; 0 cost

Store cached objects, taking into account the cache's restricted attributes;

Nscache Novice asks to fly with