Question

what is the project-setting to force code to compile undeclared methods?
This is an example of code that doesn’t compile.

UITableView *parentTable = (UITableView *)self.superview;
[parentTable reloadData];
if ([parentTable.delegate respondsToSelector:@selector(method)]) {
    [parentTable.delegate method];
}

Answer 1

Try with this syntax:

UITableView *parentTable = (UITableView *)self.superview;
[parentTable reloadData];
SEL selector = @selector(method);
if ([parentTable.delegate respondsToSelector:selector]) {
    [parentTable.delegate performSelector:selector];
}