Question

I have a class with an initializer that takes a NSDictionary:

-(id)initWithVector:(NSDictionary *) vectorDictionary;

when i try to pass it a NSDictionary, its giving me an error:

Incompatible point types sending’VectorClass * _strong’ to parameter
type ‘NSDictionary *’

code:

// myVectorList is an array of dictionaries
for (NSDictionary *vector in self.myFielder.myVectorList)
{
    if ([vector isKindOfClass:[NSDictionary class]])
    {
        // hardcoded for testing purposes 
        if ([[vector objectForKey:HANDLE] isEqualToString:@"pt07p48u17aj75qx8n2fri9jlkrc262yt8"])
        {
            // GET THE WARNING ON PASSING "VECTOR"
            VectorClass *vector = [[VectorClass alloc] initWithVector:vector];

            [vector retrieveVectorAttributeTable];
            [vector retrieveVectorMetadataTable];
        }
    }
}

if i typecast (NSDictionary *)vector, no warning.

vector should be a dictionary, so why am i getting the warning?

Answer 1

You use the same name for two different variables. The inner most variable is of type VectorClass defined in the same line, so the compiler tries to pass it to the init method, instead, change its name:

VectorClass *vectorC = [[VectorClass alloc] initWithVector:vector];
[vectorC retrieveVectorAttributeTable];
[vectorC retrieveVectorMetadataTable];