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iphoneobjective-ciosnsindexset

Search index of NSMutableArray

I need to search the index of a string from NSMutableArray. I have implemented the code & which works perfect, but I need to increase the searching speed than this.

I have used the following code:

NSIndexSet *indexes = [mArrayTableData indexesOfObjectsPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop){
    NSString *s = (NSString*)obj;
    NSRange range = [s rangeOfString: txtField.text options:NSCaseInsensitiveSearch];
    if(range.location == 0)//
        return range.location != NSNotFound;
    return NO;
}];

NSLog(@"indexes.firstIndex =%d",indexes.firstIndex);
Solution

  • There is a method indexOfObject

    NSString *yourString=@"Your string";
NSMutableArray *arrayOfStrings = [NSMutableArray arrayWithObjects: @"Another strings", @"Your string", @"My String", nil];

NSInteger index=[arrayOfStrings indexOfObject:yourString];
if(NSNotFound == index) {
    NSLog(@"Not Found");
}