How to merge 2 NSDictionaries in NSMutableArray having same value in iOS? - ios

Question

I have an NSMutableArray with NSDictionaries like below format
(
{
"login_id" = 95;
consDays = "Mon,Tue";
consEndTime = 12600000;
consStartTime = 9000000;
duration = 10;
id = 58;
isActive = 1;
},
{
"login_id" = 95;
consDays = "Wed,Thur";
consEndTime = 41400000;
consStartTime = 23400000;
duration = 10;
id = 59;
isActive = 1;
},
{
"login_id" = 98;
consDays = "Mon,Tue,Wed,Thur,Fri,Sat,Sun";
consEndTime = 45000000;
consStartTime = 9000000;
duration = 30;
id = 60;
isActive = 1;
},
I can see here first 2 object's with "login_id" 95 are same and i need to merge the contents and make something like this one
{
"login_id" = 95;
consDays = "Mon,Tue-Wed,Thur";
consEndTime = 12600000-41400000;
consStartTime = 9000000-23400000;
duration = 10;
id = 58;
isActive = 1;
},
i have tried with for loop and its not getting clear
for(int i=0;i<[[arr valueForKey:#"data"] count];i++){
NSString *bloginId=[NSString stringWithFormat:#"%#",[[[arr valueForKey:#"data"] valueForKey:#"branchLogin_id"] objectAtIndex:i]];
for(int j=0;j<[[arr valueForKey:#"data"] count];j++){
NSString *firstId=[NSString stringWithFormat:#"%#",[[[arr valueForKey:#"data"] valueForKey:#"branchLogin_id"] objectAtIndex:i]];
NSString *secondId=[NSString stringWithFormat:#"%#",[[[arr valueForKey:#"data"] valueForKey:#"branchLogin_id"] objectAtIndex:j]];
NSLog(#"%#-%#",firstId,secondId);
if([firstId isEqualToString:secondId]){
NSLog(#"%#",[consultationDetailsArray valueForKey:#"branchLogin_id"]);
if([[consultationDetailsArray valueForKey:#"branchLogin_id"] containsObject:secondId]){
NSString *str=[NSString stringWithFormat:#"%#,%#",[[consultationDetailsArray valueForKey:#"consDays"] objectAtIndex:j],[[[arr valueForKey:#"data"] valueForKey:#"consDays"] objectAtIndex:j]];
NSLog(#"consDays %#",str);
}else{
[consultationDetailsArray addObject:[[arr valueForKey:#"data"] objectAtIndex:j]];
}
}
}
}
can anyone help me ?

Answer 1

Ironically I am doing just this same thing right now. Looks like the easiest way is to use a NSMutableDictionary.
// Assume two starting dictionaries.
dictionaryOne;
dictionaryTwo;
//
// Create a mutable copy of the first
NSMutableDictionary *merged = dictionaryOne.mutableCopy;
[merged addEntriesFromDictionary: dictionaryTwo];
//
// merged now contains all keys of both dictionaries
// keys that are in both dictionaries will have values
// from dictionaryTwo.
Hope this helps.