Filtering a Json::Value object on a keys value

I have an json object: [{a:"b"},{a:"c"},{a:"c"},{a:"d"},{a:"e"}] which is stored in a Json::Value object.

I seem to be having some trouble with filtering that JSON object down to say: where only "a" = "c"

I was trying to do the following:

Json::Value data (*result.GetValue());
std::string filterValue = message->GetData()["Filter"];
std::string filterKey("a");
//above was just a quick variable definition for my example.

for ( auto row = data.begin(); row != data.end(); ++row )
    {
    if ( *row[filterKey].asString().compare(filterValue) != 0 )
        {
        //Remove this row from the JSON object.
        }
    }

Normally i am a Javascript dev, but i wanted to filter the results in C++11 before sending it to the client. In Javascript it is just as simple as: [].filter(function(ele){ if (ele["a"] == "c") return true; return false; }); but that is no help here.

In the Json::Value api, i didnt see any sort of filtering functions.

EDIT: The other issue is i was not sure how everything would act in the loop if i removed the item... something like: row->clear() or similar