iPad/iPhone specific code

gistfile1.m

On_iPhone(^{
     // Some iPhone only code
});

On_iPad(^{
     // Some iPad only code
});

or:

if ([UIDevice isIPhone]) {
     // Some iPhone only code
}

if ([UIDevice isIpad]) {
    // Some iPad only code
}

The if statement is better in my opinion. It's cleaner and easier to understand for any developer.

• No need, if necessary, to declare variables __block or __weak.
• If you wanna use the block in a method that has a return value you cannot return it in the block.