Question

Coming from C++, here’s my question :

I have created objects of this type :

    Size *one = [[Size alloc] initWithX: 3 andY: 1];
    Size *two = [[Size alloc] initWithX: 4 andY: 7];
    // etc...
    Size *thirtythree = [[Size alloc] initWithX: 5 andY: 9];

( with a @property int x; & @property int y; for each object.. )

that I have stored in an array as follows :

NSArray *arrayOfSizes;

arrayOfSizes = [NSArray arrayWithObjects:one,two,three,four,five,six,
                seven,eight,nine,ten,eleven,twelve,thirteen,
                fourteen,fifteen,sixteen,seventeen,eighteen,
                nineteen,twenty,twentyone,twentytwo,
                twentythree,twentyfour,twentyfive,twentysix,
                twentyseven,twentyeight,twentynine,thirty,
                thirtyone,thirtytwo,thirtythree nil];

now I have a single object of type :

Myobject *myObject = [[Myobject alloc] initWithX: 5 andY: 3];

that also has a @property int x; & @property int y; …

and I want to compare its values to the values of the objects found in the array, until I find an array object of similar values.. But I don’t know how to do that in Obj-C. (in c++ I would simply use a vector v; with v.size(); and v[x]; ..etc… I suppose..)

here’s what I’m looking for.. 🙂

while( !wholeOfArrayOfSizesChecked && !found)
{
    if ( // x & y of object in array is equal to x & y of myObject )
    {
        found = YES;
    }
    else if( // whole of array checked)
    {
       wholeOfArrayOfSizesChecked = YES;
    }
    else
    { 
      //move on to the next object of the array..
    }
}

Thanks in advance for any help!

Answer 1

Just to use your given structure. There are smarter ways of doing it though 🙂

wholeOfArrayOfSizesChecked = NO; 
int currObj = 0  
while( !wholeOfArrayOfSizesChecked && !found)
{
    Size *current = (Size *)[arrayOfSizes objectAtIndex:i];
    if (myObject.x == current.x && myObject.y == current.y)
    {
        found = YES;
    }
    else if(currObj == [arrayOfSizes count] -1 )
    {
       wholeOfArrayOfSizesChecked = YES;
    }
    else
    { 
      currObj++;
    }
}