Template Metaprogramming: Type Traits Part 1 CppCon 2020 1 Jody Hagins
 jhagins@maystreet.com 
 coachhagins@gmail.comTemplate Metaprogramming: Type Traits CppCon 2020 2 IntroductionIntended Audience oriented: shallow depth, slow current • Not necessarily beginner to C++, but beginner to traditional template metaprogramming techniques 3Intended Audience • Beginner/Intermediate • Gentle entry: swimming oriented: shallow depth, slow current • Not necessarily beginner to C++, but beginner to traditional template metaprogramming techniques • Type traits part of standard library for ~10 years 3Intended Audience

1 / 58Template Metaprogramming (TMP) Template Metaprogramming (TMP) template using meta_fun = this_talk; 2 / 58❓static_assert(Template::Metaprogramming::is_hard); // ✔ 3 / 58❓s 58❓static_assert(Template::Metaprogramming::is_hard); // ✔ ❓static_assert(Template::Metaprogramming::is_powerful); // ✔ 3 / 58❓static_assert(Template::Metaprogramming::is_hard); // ✔ ❓static_assert( ❓static_assert(Template::Metaprogramming::is_powerful); // ✔ ❓static_assert(( Template::Metaprogramming::is_easy and Template::Metaprogramming::is_powerful and Template::Metaprogramming::has_nice_error_messages

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data

provide serverless SQL on Data Warehouses and Lake- houses. Kyuubi builds distributed SQL query engines on top of various kinds of modern computing frameworks, e.g., Apache Spark, Flink, Doris, Hive, and bridge to communicate with Kyuubi. • RESTful APIs – It provides system management APIs, including engines, sessions, operations, and miscellaneous ones. – It provides methods that allow clients to submit and Kerberos, for securing networking between clients and servers. On the data plane, the Kyuubi engines use the same trusted client identities to instantiate themselves. The resource acquirement and data