Objective-C convention to prevent “local declaration hides instance variable” warning

Question

I am using the following code ...

-(id) initWithVariableName:(NSString*)variableName withComparisonValue:(NSString*)comparisonValue {

    // super init
             


        

Answer 1

You should generally prefix instance variables with something like an underscore (e.g. _variableName) to avoid compiler warnings like this.

Otherwise just slightly change the names in your method signature, there is no hard defined naming convention.