Giffy

This project demonstrates the following:

• Querying Giphy to search for items based upon a keyword.
• Utilizes the Swift 4 facility to decode the JSON directly into objects.
• Results paging, based upon a sparse set of data.
• Utilizes the Swift 4 zip facility and unbound ranges to insert items into the sparse dictionary(array) by using merge to insert new items into dictionary.
• An autocomplete facility which changes and filters based upon what letters are typed (currently a hard coded list).
• An in memory cache for keeping images around, or purging when max memory is reached.
• Use of Adaptors to keep the reponsibilities of the objects limited and avoid the MassivViewController antipattern.
• A Trie data structure to do the lookup of words for suggested autocomplete data.
• Asyncronously loads autocomplete.
• Saving and Reloads the built trie from disk so it only has to be built once. (uses JSON but would be better to use a binary format).