Function on C++ Club

Meeting 27 June 2019

Thu, 27 Jun 2019 00:00:00 +0000

Meeting 27 June 2019

Concept-based interfaces, by Gianluca Delfino

template <typename T>
concept Shape = requires(const T& t)
{
    { t.area() } -> float;
};

template <typename T>
struct Rectangle
{
    Rectangle() { static_assert(Shape<T>); }
    float area() const;
    T base;
    T height;
};

Alternative solution:

template <typename T>
concept Shape = requires(const T& t)
{
    { t.area() } -> float;
};

template<class T>
struct ModelsShape
{
    ModelsShape() requires(Shape<T>) = default;
};

struct Circle: ModelsShape<Circle>
{
    float area() const;
    float radius;
};

Intel Data Parallel C++

Part of Intel One API Project. Based on C++14 and SYCL. Open Source. Developer Beta in 2019 Q4.

Meeting 20 June 2019

Thu, 20 Jun 2019 00:00:00 +0000

Meeting 20 June 2019

CPPP19 Trip Reports

https://deque.blog/2019/06/17/trip-report-on-cppp-19-the-first-edition-of-the-first-c-french-conference/

Hello World with reflection

Heterogeneous Lookup in Ordered Containers in C++14

https://www.bfilipek.com/2019/05/heterogeneous-lookup-cpp14.html

https://www.reddit.com/r/cpp/comments/btrfnd/heterogeneous_lookup_in_ordered_containers_c14/

Professional, zero-cost setup for C++ projects

Part 1: https://awfulcode.io/2019/04/13/professional-zero-cost-setup-for-c-projects-part-1-of-n/

Part 2: https://awfulcode.io/2019/04/26/professional-zero-cost-setup-for-c-projects-part-2-of-n/

Reddit: https://www.reddit.com/r/cpp/comments/bhqcjh/professional_zerocost_setup_for_c_projects_part_2/

Higher-order functions

Meeting C++ 2018: Björn Fahller - Higher Order Functions for ordinary developers

A higher-order function is a function that takes other functions as arguments or returns a function as result.

Take-away messages:

Meeting 5 July 2018

Thu, 05 Jul 2018 00:00:00 +0000

Meeting 5 July 2018

Rapperswil reports

Corentin
Herb Sutter
- “I sometimes delay my trip report until the post-meeting mailing is available so that everyone can see the latest papers”
- On contracts: “Having first-class contracts support it is the first major “step 1” of reforming error handling in C++ and applying 30 years’ worth of learnings.”
- On std::bad_alloc: “Consider handling heap exhaustion (out-of-memory, OOM) differently from other errors.”
- On feature test macros: “Some experts still disagree, and we respect their views, but in my view these feature test macros are an important and pragmatic help to improve the speed of adoption of new standard C++ features.”
- Reddit thread
J.Daniel Garcia’s Contracts presentation and slides

Post-Rapperswil mailing

Mailing 2018-06

Function on C++ Club

Meeting 27 June 2019

Meeting 27 June 2019

Concept-based interfaces, by Gianluca Delfino

Intel Data Parallel C++

Meeting 20 June 2019

Meeting 20 June 2019

CPPP19 Trip Reports

Hello World with reflection

Heterogeneous Lookup in Ordered Containers in C++14

Professional, zero-cost setup for C++ projects

Higher-order functions

Meeting 5 July 2018

Meeting 5 July 2018

Rapperswil reports

Post-Rapperswil mailing

The One Ranges Proposal, by Casey Carter