iOS Objective-C switch with string

switch-string.m

NSString *testedString;
__block NSString *selected;

((void (^)())@{

    @"A" : ^{

        selected = @"A selected";
    },

    @"B" : ^{

        selected = @"B selected";
    },

    @"C" : ^{

        selected = @"C selected";
    },

}[testedString] ?: ^{
   // default
})();