Search NSArray for value matching value

Question

I have an NSArray of objects, which has a particular property called name (type NSString).
I have a second NSArray of NSStrings which are

Answer 1

I like to use this method:

NSIndexSet *indexes = [_items indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) {
   return ((MyObject *)obj).name isEqualToString:name];
}];

if (indexes.count != 0) {
//extract your objects from the indexSet, and do what you like...
}

Answer 2

Here's a simple way:

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name == %@", nameToFind];
[listOfItems filteredArrayUsingPredicate:predicate];

Answer 3

int count=0;

if (range.location!=NSNotFound)
  {                   
  [searchindex addObject:[NSString stringWithFormat:@"%d",count]];           
  }

Answer 4

NSMutableArray* solutions = [NSMutableArray array];

for (Object* object in objects){
   for (NSString* name in names){
       if ([object.name isEqualToString:name]){
          [solutions addObject:object];
          break; // If this doesnt work remove this
       }
   }
}

Answer 5

Why not just to use predicates to do that for you?:

// For number kind of values:
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF = %@", value];
NSArray *results = [array_to_search filteredArrayUsingPredicate:predicate];

// For string kind of values:
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@", value];
NSArray *results = [array_to_search filteredArrayUsingPredicate:predicate];

// For any object kind of value (yes, you can search objects also):
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", value];
NSArray *results = [array_to_search filteredArrayUsingPredicate:predicate];

Answer 6

NSMutableArray * foundNames = [NSMutableArray array];
for (MyObject * objectWithName in objectCollection) {
    if ([names containsObject:objectWithName.name]) {
        [foundNames objectWithName];
    }
}