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

read next III. Using Spring Boot 13. Build systems Dependency management Maven Inheriting the starter parent Using Spring Boot without the parent POM Changing the Java version Using the Spring Boot Serializers and Deserializers MessageCodesResolver Static Content ConfigurableWebBindingInitializer Template engines Error Handling Custom error pages Mapping error pages outside of Spring MVC Error Handling conditions Web application conditions SpEL expression conditions Creating your own starter Naming Autoconfigure module Starter module 44. What to read next V. Spring Boot Actuator: Production-ready features

read next III. Using Spring Boot 13. Build systems Dependency management Maven Inheriting the starter parent Using Spring Boot without the parent POM Using the Spring Boot Maven plugin Gradle Ant Starters Deserializers MessageCodesResolver Static Content Custom Favicon ConfigurableWebBindingInitializer Template engines Error Handling Custom error pages Mapping error pages outside of Spring MVC Error Handling WebFlux auto-configuration HTTP codecs with HttpMessageReaders and HttpMessageWriters Static Content Template engines JAX-RS and Jersey Embedded servlet container support Servlets, Filters, and listeners

read next III. Using Spring Boot 13. Build systems Dependency management Maven Inheriting the starter parent Using Spring Boot without the parent POM Using the Spring Boot Maven plugin Gradle Ant Starters Deserializers MessageCodesResolver Static Content Custom Favicon ConfigurableWebBindingInitializer Template engines Error Handling Custom error pages Mapping error pages outside of Spring MVC Error Handling WebFlux auto-configuration HTTP codecs with HttpMessageReaders and HttpMessageWriters Static Content Template engines JAX-RS and Jersey Embedded servlet container support Servlets, Filters, and listeners

............................................................................. 24 Inheriting the starter parent ............................................................................... 24 Using ...................................................................................... 27 13.5. Starter POMs ........................................................................................... ConfigurableWebBindingInitializer ...................................................................... 78 Template engines .......................................................................................

management Maven Inheriting the starter parent Using Spring Boot without the parent POM Changing the Java version Using the Spring Boot Maven plugin Gradle Ant Starter POMs 14. Structuring your code Serializers and Deserializers MessageCodesResolver Static Content ConfigurableWebBindingInitializer Template engines Error Handling Error Handling on WebSphere Application Server Spring HATEOAS CORS support conditions Web application conditions SpEL expression conditions Creating your own starter Naming Autoconfigure module Starter module 42. WebSockets 43. What to read next V. Spring Boot Actuator: Production-ready

read next III. Using Spring Boot 13. Build systems Dependency management Maven Inheriting the starter parent Using Spring Boot without the parent POM Changing the Java version Using the Spring Boot Deserializers MessageCodesResolver Static Content Custom Favicon ConfigurableWebBindingInitializer Template engines Error Handling Custom error pages Mapping error pages outside of Spring MVC Error Handling conditions Web application conditions SpEL expression conditions Creating your own starter Naming Autoconfigure module Starter module 45. What to read next V. Spring Boot Actuator: Production-ready features

read next III. Using Spring Boot 13. Build systems Dependency management Maven Inheriting the starter parent Using Spring Boot without the parent POM Changing the Java version Using the Spring Boot Deserializers MessageCodesResolver Static Content Custom Favicon ConfigurableWebBindingInitializer Template engines Error Handling Custom error pages Mapping error pages outside of Spring MVC Error Handling conditions Web application conditions SpEL expression conditions Creating your own starter Naming Autoconfigure module Starter module 44. What to read next V. Spring Boot Actuator: Production-ready features