Method isMember

ThirdParty/jsoncpp/vtkjsoncpp/jsoncpp.cpp:3663–3666

}

bool Value::isMember(char const* begin, char const* end) const {
  Value const* value = find(begin, end);
  return nullptr != value;
}
bool Value::isMember(char const* key) const {
  return isMember(key, key + strlen(key));
}