Function operator=

include/fmt/base.h:2440–2443

  constexpr basic_appender(detail::buffer<T>& buf) : container(&buf) {}

  FMT_CONSTEXPR auto operator=(T c) -> basic_appender& {
    container->push_back(c);
    return *this;
  }
  FMT_CONSTEXPR auto operator*() -> basic_appender& { return *this; }
  FMT_CONSTEXPR auto operator++() -> basic_appender& { return *this; }
  FMT_CONSTEXPR auto operator++(int) -> basic_appender { return *this; }