(Objective-C) Sort JSON Object by Member Key Name

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Demonstrates how to sort the members of a JSON object by the key name.

IMPORTANT: This example requires a pre-release for the next version of Chilkat after the current v9.5.0.99 release. Contact info@chilkatsoft.com if you wish to get a pre-release. However, pre-releases of .NET Core (hosted on NuGet) and Node.js will not be possible.

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#import <CkoJsonObject.h>

CkoJsonObject *json = [[CkoJsonObject alloc] init];

[json UpdateString: @"xyz" value: @"1234"];
[json UpdateString: @"abc.xyz" value: @"1234"];
[json UpdateString: @"abc.def" value: @"1234"];
[json UpdateString: @"abc.aaa" value: @"1234"];
[json UpdateString: @"ghi" value: @"1234"];
[json UpdateString: @"nmo" value: @"1234"];

json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// This is our initial JSON:

// {
//   "xyz": "1234",
//   "abc": {
//     "xyz": "1234",
//     "def": "1234",
//     "aaa": "1234"
//   },
//   "ghi": "1234",
//   "nmo": "1234"
// }

// Sort the top-level JSON object by key.
BOOL ascending = YES;
BOOL caseSensitive = YES;
[json Sort: ascending caseSensitive: caseSensitive];

// Look at the sorted JSON..
NSLog(@"%@",[json Emit]);

// {
//   "abc": {
//     "xyz": "1234",
//     "def": "1234",
//     "aaa": "1234"
//   },
//   "ghi": "1234",
//   "nmo": "1234",
//   "xyz": "1234"
// }

// Now sort the members of the "abc" object..
CkoJsonObject *jsonAbc = [json ObjectOf: @"abc"];
[jsonAbc Sort: ascending caseSensitive: caseSensitive];

// Now look at the JSON with the members under "abc" also sorted..
NSLog(@"%@",[json Emit]);

// {
//   "abc": {
//     "aaa": "1234",
//     "def": "1234",
//     "xyz": "1234"
//   },
//   "ghi": "1234",
//   "nmo": "1234",
//   "xyz": "1234"
// }