C++ Now 2017

silviana amethyst
5/20/17

Takeaways from C++ Now 2017 ¶

May 15-20 2017

I had generous support from my postdoc mentor Jon Hauenstein at Notre Dame to attend this year’s C++ Now conference, 2017. Here are some takeaways from this intensive week of C++ in Aspen Colorado.

Things to learn more about

• structured bindings
• tag types
• std::nullopt
• std::decay_t (2x)
• throwing as a mechanism to provide a link error for constexpr
• murmur hash – constexpr
• detection idiom (Marshall)
• discriminated union
• std::monostate
• user supplied literals
• std::apply
• type erasure
• higher order metafunctions
• coroutines (2x) (3x) – Tools for asyncronous computing

Things from C++17 to use in my code

• fold expressions to eliminate template recursion
• if constexpr

Upcoming C++20 things to pay attention to

• Concepts – expressing things that types implement, and functions requiring a concept be implemented
• Modules – A way for packaging code, without headers
• Contracts – Pre- and post-conditions on arguments to functions
• Proxy iterators