path/FastImageCache — pull request #61 by jszumski (2014-07-03 23:31:51+00:00)
Title: Made the requirement of a non-nil formatName more explicit.

The assertion brings the error closer to the calling code. A `nil` `formatName` will eventually crash in `_FICAddCompletionBlockForEntity()` at `[requestDictionary setObject:formatName forKey:FICImageCacheFormatKey]`. The assert can't go in `_FICAddCompletionBlockForEntity()` because the `NSParameterAssert` macro requires `self`.