SafeKVObject

A safe Key-Value object processer

Require

ARC, iOS 6.0+ or MacOSX 10.8+

Usage

#import "SKVObject.h"

NSString *jsonString = @"{\"k\":\"v\"}";

// create from json string
SKVObject *jsonObj = [SKVObject ofJSON:jsonString];

// query by key
NSLog(@"o[\"k\"] = %@", jsonObj[@"k"]);
// query by index
NSLog(@"o[3] = %@", jsonObj[3]);

NSDictionary *dict = @{@"k" : @"v",
                       @"a" : @[@"a", @"b"],
                       @"da" : @{@"0" : @"a", @"1" : @"b", @"2" : @"c"},
                       @"d" : @{@"dk": @{@"dkk": @"dvv"}},
                       @"n" : @1.3f,
                       @"null" : [NSNull null],
                       };

// create from dictionary
SKVObject *obj = [SKVObject of:dict];

// Enumeration
[obj enumerateKeysAndObjectsUsingBlock:^(id key, id object , BOOL *stop) {
NSLog(@"o[%@] = %@", key, object);
}];
[obj[@"a"] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(@"o[\"a\"][%lu] = %@", idx, obj);
}];

// fastEnumeration
for (SKVObject *o in obj[@"a"]) {
NSLog(@"o[\"a\"] = %@", o);
}

for (id key in obj) {
NSLog(@"o[%@] = %@", key, obj[key]);
}

// nesting query
NSLog(@"o[\"d\"][\"dk\"][\"dkk\"] = %@", obj[@"d"][@"dk"][@"dkk"]);
NSLog(@"o[\"a\"][0] = %@", obj[@"a"][0]);
// out of bound
NSLog(@"o[\"a\"][2] = %@", obj[@"a"][2]);
// array or dictionary? no matter
NSLog(@"o[\"a\"][\"0\"] = %@", obj[@"a"][@"0"]);
NSLog(@"o[\"da\"][\"0\"] = %@", obj[@"da"][@"0"]);
NSLog(@"o[\"da\"][0] = %@", obj[@"da"][0]);
// number value convert
NSLog(@"o[\"n\"]: %f", [obj[@"n"] floatValue]);
// NSNull will become nil
NSLog(@"null: %@, NSNull: %@", obj[@"null"], [NSNull null]);