_and_overwrite()  Monadic Operations for std::optional  Stacktrace Library  Changes to Ranges Library  Changes to Views Library  std::expected  std::move_only_function<>  std::spanstream _and_overwrite()  Monadic Operations for std::optional  Stacktrace Library  Changes to Ranges Library  Changes to Views Library  std::expected  std::move_only_function<>  std::spanstream _and_overwrite()  Monadic Operations for std::optional  Stacktrace Library  Changes to Ranges Library  Changes to Views Library  std::expected  std::move_only_function<>  std::spanstream

Coroutines  Concepts  Lambda Expression Changes  [=, this] as Lambda Capture  Templated Lambda Expressions  Pack Expansion in Lambda Captures  constexpr Changes  virtual functions  union, try/catch try/catch, dynamic_cast, typeid  allocations  constexpr string & vector  Concurrency Changes  Atomic Smart Pointers  Joining & Cancellable Threads  The C++20 Synchronization Library  Semaphores, (PCH)  Custom headers can also be made importable, but how to is compiler dependent “How C++20 Changes the Way We Write Code” -- Timur Doumler Friday, September 18 • 12:00Ranges11 Ranges  What’s

code that can’t be optimized • debugger; statement. • Polymorphic functions Beware of Object changes! Questions A little about me • Developer of the NativeScript.rocks sites: • > 20 years doing programming

tns run android //Target specific platform $ tns run ios --emulator o Refresh app with latest changes to JS, CSS, XML o No re-build o Works with emulators AND devices DEMO NativeScript Core Concepts

nullptr checks to save space. atomic> What happens when a concurrent operation changes the pointer to a different shared_ptr?29 Daniel Anderson -- danielanderson.net Solution #2: