NSString *jsonString;
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:nsmutablearray
options:NSJSONWritingPrettyPrinted // Pass 0 if you don't care about the readability of the generated string
error:&error];
if (!jsonData) {
NSLog(@"Got an error: %@", error);
} else {
jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
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