Can we use variable class names to declare variables in objective-c?

Question

Something like

Class tableViewCellClass = BGUIBusinessCellForDisplay.class;
tableViewCellClass * cell = (tableViewCellClass *)tableView.visibleCells[0];

That gets compile error.

You're confusing two separate stages of your progam: compilation time and run time. The variable's type only exists during the first stage. The return value of [BGUIBusinessCellForDisplay class], which is an object, doesn't exist until later, at run time. However, there is almost certainly a way to accomplish your goal, so please explain what it is. — jscs
– jscs, Commented Jan 21, 2013 at 19:46

Ryan · Accepted Answer · 2013-01-21 19:43:50Z

3

you cannot type it using the class variable - as it's an object, not a type. You can however type it id. e.g.

Class myClassVar = self.class;
id newInstance = [[myClassVar alloc] init];

answered Jan 21, 2013 at 19:43

Ryan

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Richard J. Ross III · Accepted Answer · 2013-01-21 19:44:19Z

1

Typedefs are as close as you can get:

typedef BGUIBusinessCellForDisplay tableViewCellClass;

Which somewhat allows you to do what you want, but the overall question I have is what are you trying to accomplish?

answered Jan 21, 2013 at 19:44

Richard J. Ross III

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1 Comment

user4951 Over a year ago

typedef is at compile time. I tried to have a code that will work with 2 types of UItableViewCells. The codes are similar but I want one subclass to deal with one type and the other with another type.

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