Easily convert between dictionaries and query strings in iOS and OS X. The API is similar to NSJSONSerialization.

NSString *queryString = [CMDQueryStringSerialization queryStringWithDictionary:dictionary];

CMDQueryStringSerialization supports arrays encoded in one of the following three formats:

• key=value1&key=value2
• key[]=value1&key[]=value2
• key=value1,value2

CMDQueryStringWritingOptions contains options that map to each of these formats, with CMDQueryStringWritingOptionArrayRepeatKeysWithBrackets being the default if no option is passed.

CMDQueryStringSerialization is released under the MIT License.