instance variable/ method argument naming in Objective C

Question

What conventions are people here following for naming of instance variables and method arguments - particularly when method arguments are used to set ivars (instance variabl

Answer 1

To complete all known Objective-C styleguides here is the google version. What they do is to add an underscore after the the member varname. For instance BOOL isActive_;.
So make a choice and stick with it. I also prefer the "_" prefix for my apps.