iOS - Make a copy of a array object into another

Question

I have a little problem, and I need help.

I want to loop through a multidimensional array, and every time I find a value for a key ex."name" that is equal to ex. "Hello". I want to copy that array object into another array.

How do I do that?

You will probably find that Stack Overflow provides better answers if you include the code you already wrote in your question. — Adam B
– Adam B, Commented Aug 19, 2012 at 9:04
I agree with Adam. Without codes it is difficult to understand exact situation. — Aniruddh
– Aniruddh, Commented Aug 19, 2012 at 9:39

pasawaya · Accepted Answer · 2012-08-19 20:49:42Z

7

This is how you would do it:

NSArray* newArray = [NSArray arrayWithArray:oldArray]

edited Aug 19, 2012 at 20:49

pasawaya

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answered Aug 19, 2012 at 9:08

Hank

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2 Comments

Michael Dautermann Over a year ago

-1; Morten wants to copy something only when certain values / conditions are satisfied, so your answer isn't as helpful as it should be.

Jayprakash Dubey Over a year ago

As simple as that! +1

anka · Accepted Answer · 2012-08-19 09:37:18Z

2

I assume you have a 2-dimensional array and since I don't know how your objects within the array look like I take the id type and the method valueForKey:

 NSMutableArray *tmp = [[NSMutableArray alloc] init];
 for(NSArray *dim1Array in yourMultidimensionalArray)
 {
    for(id obj in dim1Array)
    {
       if([[obj valueForKey:@"name"] isEqualToString:@"Hello"])
       {
          [tmp addObject:dim1Array];
          break; // I assume you only want to add it once
       }
    }
 }

answered Aug 19, 2012 at 9:37

anka

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1 Comment

Till Over a year ago

I may have misunderstood the question but for me it seems as if the OP is asking for a copy of the object and not the array. But then again, I am unsure. Anyways, in case I got it right, only the most inner two lines would have to be changed towards [tmp addObject:obj];.

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