Convenience subscript for ImageCache

Sources/Deprecated.swift

@@ -272,6 +272,10 @@ public final class Cache: Caching, ImageCaching {
         self[ImageRequest.CacheKey(request: request)] = response.image
     }
 
+    public func removeResponse(for request: ImageRequest) {
+        self[ImageRequest.CacheKey(request: request)] = nil
+    }
+
     // MARK: Caching
 
     public subscript(key: AnyHashable) -> Image? {

Sources/ImageCache.swift

@@ -18,6 +18,26 @@ public protocol ImageCaching: class {
 
     /// Stores the given `ImageResponse` in the cache using the given request.
     func storeResponse(_ response: ImageResponse, for request: ImageRequest)
+
+    /// Remove the response for the given request.
+    func removeResponse(for request: ImageRequest)
+}
+
+/// Convenience subscript.
+public extension ImageCaching {
+    /// Accesses the image associated with the given request.
+    public subscript(request: ImageRequest) -> Image? {
+        get {
+            return cachedResponse(for: request)?.image
+        }
+        set {
+            if let newValue = newValue {
+                storeResponse(ImageResponse(image: newValue, urlResponse: nil), for: request)
+            } else {
+                removeResponse(for: request)
+            }
+        }
+    }
 }
 
 /// Memory cache with LRU cleanup policy (least recently used are removed first).

Tests/ImageCacheTests.swift

@@ -5,21 +5,6 @@
 import XCTest
 @testable import Nuke
 
-extension ImageCache {
-    subscript(request: ImageRequest) -> Image? {
-        get {
-            return cachedResponse(for: request)?.image
-        }
-        set {
-            if let newValue = newValue {
-                storeResponse(ImageResponse(image: newValue, urlResponse: nil), for: request)
-            } else {
-                removeResponse(for: request)
-            }
-        }
-    }
-}
-
 private func _request(index: Int) -> ImageRequest {
     return ImageRequest(url: URL(string: "http://example.com/img\(index)")!)
 }