Method IsMember

simcore/framework/src/cli/cli.hpp:2724–2725

  /// This allows in-place construction using an initializer list
  template <typename T, typename... Args>
  IsMember(std::initializer_list<T> values, Args &&...args)
      : IsMember(std::vector<T>(values), std::forward<Args>(args)...) {}

  /// This checks to see if an item is in a set (empty function)
  template <typename T>