Block implicitly retains 'self'; explicitly mention 'self' to indicate this is intended behavior

Question

Given the following:

- (void) someMethod
{
    dispatch_async(dispatch_get_main_queue(), ^{
        myTimer = [NSTimer scheduledTimerWithTimeInterval: 60
            


        

Answer 1

Replacing myTimer by self->myTimer would fix your warning.

When you use an iVar _iVar in the code, the compiler will replace the code by self->_iVar, and if you use it inside a block, the block will capture self instead of the iVar itself. The warning is just to make sure the the developer understand this behaviour.