Method Visit

cpp/src/arrow/builder.cc:198–201

struct MakeBuilderImpl {
  template <typename T>
  enable_if_not_nested<T, Status> Visit(const T& t) {
    out.reset(new typename TypeTraits<T>::BuilderType(type, pool));
    return Status::OK();
  }

  Status Visit(const DictionaryType& dict_type) {
    DictionaryBuilderCase visitor = {pool,