Add to NSDictionary entries to NSMutableDictionary - iphone

Question

I have a for loop that goes through a series of dictionaries in an array.
How can I consolidate all the dictionaries entries as it goes through the for loop into one NSMutableDictionary?
I tried addEntriesFromDictionary, but its not working. Thanks for your help.
for (int i=0; i<sections.count; i++){
formElements = [[sections objectAtIndex:i]objectForKey:#"Dictionary"];
}

Answer 1

NSMutableDictionary * mutableDict = [NSMutableDictionary dictionary];
for (NSDictionary * formElements in sections)
{
[mutableDict addEntriesFromDictionary:formElements];
}
This should work if It's correct that they don't share any keys.

Answer 2

you can add dictionary object like below.
NSMutableDictionary *mDict=[NSMutableDictionary dictionary];
[mDict addEntriesFromDictionary:DictObj];

Answer 3

NSMutableDictionary *mDict=[[NSMutableDictionary alloc]init];
NSMutableDictionary *mDict2=[[NSMutableDictionary alloc]init];
//later suppose you have 5 object in mDict and 2 object in mDict2. combine in this Way.
NSMutableArray *keys=[[NSMutableArray alloc]init];
NSMutableArray *obj=[[NSMutableArray alloc]init];
keys=[[mDict allKeys] mutableCopy];
obj=[[mDict allValues] mutableCopy];
[keys addObjectsFromArray:[mDict2 allKeys]];
[obj addObjectsFromArray:[mDict2 allValues]];
NSMutableDictionary *dict=[[NSMutableDictionary alloc]initWithObjects:obj forKeys:keys];

Answer 4

You can enumerate your dictionaries with -objectEnumerator or other methodfs of NSDictionary.
So inside your loop you enumerate your dictionary and add all objects an keys into one big dictionary.