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// MGTwitterEngineGlobalHeader.h
// MGTwitterEngine
// Created by Matt Gemmell on 09/08/2008.
// Copyright 2008 Instinctive Code.
This file conditionally includes the correct headers for either Mac OS X or iPhone deployment.
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import <Cocoa/Cocoa.h>
Set YAJL_AVAILABLE to 1 if the YAJL JSON parser is available and you'd like MGTwitterEngine to use it.
More information about this parser here:
There are some speed advantages to using JSON instead of XML. Also, the Twitter Search API
uses JSON, so adding this library to your project makes additional methods available to your
Be aware, however, that the data types in the dictionaries returned by JSON may be different
than the ones returned by XML. There is more type information in a JSON stream, so you may find
that you get an NSNumber value instead of an NSString value for some keys in the dictionary.
Make sure to test the new result sets in your application after switching from XML to JSON.
Likewise, some keys may differ between the XML and JSON parsers. An example is the hourly limit
returned by the getRateLimitStatus: method. For JSON, the key is "hourly_limit", for XML it is
The event driven nature of the YAJL parser also allows delivery options to be specified. By
default, all results are returned as an array of dictionaries. In some environments, such as the
iPhone, the memory overhead of putting all the data into the array can be avoided by choosing
the individual results option. This allows your application to process and store results without
instantatiating a large collection and then enumerating over the items.
If you want to use YAJL, change the following definition and make sure that the
MGTwitterEngine*YAJLParser.m files are added to the Compile Sources phase of the MGTwitterEngine
When enabled, this definition artificially adds 0x7ffffff to each tweet ID that is read from the API. It
also subtracts 0x7fffffff from anything it sends back to the API. This allows you to test your application
code and make sure it works well with large unsigned longs. This is important because tweet IDs that are
treated as signed integers will become negative after 2^32 - 1 (0x7fffffff). This will happen sometime
around the end of May 2009.
A future release of MGTwitterEngine will use 64-bit integers for the tweet IDs. The current change is
meant as a stopgap measure that will affect existing applications as little as possible.
#define LARGE_ID_TEST 0
This option is only available when you are using the YAJL parser. Do not change the following definition.
#define LARGE_ID_TEST 0
typedef unsigned long long MGTwitterEngineID;
typedef long long MGTwitterEngineCursorID;
typedef double MGTwitterEngineLocationDegrees;
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