|Dec 15, 2008, 06:23 AM||#1|
Nsdictionary in sorted list
I need to have a hashmap in my application. so i used nsdictionary. But i insert the key-value pair in nsdictionary in one order, What i get from nsdictionary is in different order. Is there a way to accompany to put key-value pair in some datatype and retreive from it in same order?
|Dec 15, 2008, 01:49 PM||#2|
(1) Keep an array of keys along with the dictionary. Then loop through the array and use the keys to get the values. (You'll have to add your own checks to keep the same key from appearing in the array twice.)
(2)You could keep an array of custom objects, one custom object for each pair (give the object .key and .value properites) . That's a very object-oriented way, but you lose the ability to easily find the value for a key (you have to loop through the array.)
(3)You could keep two arrays of strings, one for keys and one for values.
to find a value for a key, you just use
keyIndex = [myKeys indexOfObject: keyIWant]; keyValue = [myValues objectAtIndex: keyIndex];
|Dec 16, 2008, 12:32 AM||#3|
I cant use two data structure to accompany this. Because I am sending this key-value pair from the server, since i am handling with huge data, I cant send both arrays and dictionary from the server, it will slow done the process. Is there any other way?
|Thread Tools||Search this Thread|
|thread||Thread Starter||Forum||Replies||Last Post|
|Resolved: XML -> NSDictionary||DennisBlah||iPhone/iPad Programming||5||May 19, 2014 04:51 PM|
|Where do I initialise NSDictionary||GerardGrundy||iPhone/iPad Programming||9||Sep 8, 2013 11:04 PM|
|NSDictionary and NSUserNotification Question||DavidBlack||Mac Programming||7||Aug 19, 2013 01:43 AM|
|JSON and NSDictionary||mngoose||iPhone/iPad Programming||6||Jun 7, 2012 09:33 AM|
|Got my mac mini sorted||serendipidy||Mac mini||4||Jun 1, 2012 11:11 AM|
All times are GMT -5. The time now is 03:51 PM.