Oat++

# 创建项目目录
mkdir work_node && cd work_node
# 创建 vcpkg.json vcpkg-configuration.json 文件
vcpkg new --application
# 添加依赖包
vcpkg add port oatpp oatpp-swagger
# 安装依赖
vcpkg install
# 生成项目
cmake --preset=vcpkg
# 编译
cmake --build build

const oatpp::Fields<oatpp::Any> fields({});
printf("fields size %lu\n", fields->size());
if (fields["user_id"] != nullptr) printf("user_id != nullptr");
printf("fields size %lu\n", fields->size());

fields size 0
fields size 1

for (const auto &pair: *filterFields) {
  printf("fields %s\n", pair.first->c_str());
}