Casting to NSDictionary instead of [String : AnyObject]

[tkhikage]

#102
I had have same probrem.
I examined the issue with Time Profiler Instruments, and found that casting to [String : AnyObject] is very slow.
On a trial basis , I changed to cast to NSDictionary, and it improved perfromance.
There was no probrem in unit testing.

By the way , this is my first pull request in my github life.Please forgive me if something wrong.And sorry for my poor English.

[LukeTangPL]

In JSON. An object is an unordered set of name/value pairs, the name must be String.

[seboslaw]

@clwkct I have the same issue:

https://www.dropbox.com/s/o8sfbjowd8mm3xw/Screenshot%202015-02-27%2015.44.54.png?dl=0

[tkhikage]

@seboslaw Thank you for commenting.
I'm wondering why this is so slow like this ...
Currently, I'm not using SwiftyJSON in cases requiring performance.(This is not the probrem of SwiftyJSON,though.)

[LukeTangPL]

#200

[ThoseGuysInTown]

@seboslaw Why does your Xcode have those % indicators on the right side?

[seboslaw]

@ThoseGuysInTown That's actually the "Time Profiler" in Instruments