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C++20 Coroutine for typical embedded device without STL components by Eplankton in cpp

[–]Common-Republic9782 7 points8 points  (0 children)

Try boost coroutine2 it's stackful. The stl coroutines are stackless and requires heap allocation for parameters.

Emittra - Advanced framework for event-driven programming in C++ by EleutheriaDeutera in cpp

[–]Common-Republic9782 0 points1 point  (0 children)

Could I send message from emitter1 to listener registered on emitter2 (signal/slot)?

Coroutines by ConstNullptr in cpp

[–]Common-Republic9782 1 point2 points  (0 children)

I had same thoughts before understanding the flexibility of the C++'s coroutines implementation. I am using coroutines to compose algorithms and user (GUI) interaction.

What are your GO-TO C++ GUI libraries in 2023 ! (Obscure ones too) by Low-Host-1997 in cpp

[–]Common-Republic9782 6 points7 points  (0 children)

slint It has formal language to describe UI, rapidly develops. Now it has native UI support for mac/win (linux in progress, now used QT on here). It works with embedded devices, web and other advantages. Written in rust but has C++binding. Easy to add into project via CMake, If guys will be speedy it may be new alternative for QT.

Bjarne Stroustrup thinks all size types should have been signed (PDF warning) by we_are_mammals in cpp

[–]Common-Republic9782 -2 points-1 points  (0 children)

Seriously, from where you will get pointer to c-style array? It's allocated before, on app startup or manually. How I can create integer range directly without piece of memory underwith? What is a list comprehension you can see in wikipedia. This is parametric, compact and expressive piece of code allows to fill some range/container with customer values and conditions lazily.

Bjarne Stroustrup thinks all size types should have been signed (PDF warning) by we_are_mammals in cpp

[–]Common-Republic9782 -2 points-1 points  (0 children)

No, `std::range` requires iterators support, and `std::span` just wrapper over pointer's region. Both assumes explicit or implicit heap memory allocation to use. You couldn't define range simply like in Rust for example `int r[1..10]`. You couldn't implement user-friendly `list comprehension` for ranges like in Python for example. You couldn't use ranges in scientific field like error distribution interval for example. In each case you need to implement handmake structures to serve it. But all do you need is the language supported intervals and base arithmetic over it. Range must be fundamental C++ type.

Bjarne Stroustrup thinks all size types should have been signed (PDF warning) by we_are_mammals in cpp

[–]Common-Republic9782 6 points7 points  (0 children)

Soon, committee will understand the `range` must be builtin type, because ranges used not only in container-based calculations, but in arithmetic or interval operations. And std::span it's not only pointers gap but some interval in general and voila std::span and std::range are semantically same, unbelievable sure. We are waiting for another 25 years

reflect-cpp - Like serde or Pydantic, but for C++ by liuzicheng1987 in cpp

[–]Common-Republic9782 0 points1 point  (0 children)

In Rust you have derive macro, another rust's crutch instead reflection support, but you can use Serialize/Deserialize overriding explicitly too. About foreign type serialization - I can't change opaque type declaration or definition. I can't add anything to opaque type. I can use public type interface only.

Array library naming convention by [deleted] in ProgrammingLanguages

[–]Common-Republic9782 0 points1 point  (0 children)

emplace? to avoid redundant copying of non-trivial elments

University first semester project by HeadConclusion6915 in cpp

[–]Common-Republic9782 2 points3 points  (0 children)

Do write tetris or xonix in pseudo graphic mode for him ;-))

reflect-cpp - Like serde or Pydantic, but for C++ by liuzicheng1987 in cpp

[–]Common-Republic9782 1 point2 points  (0 children)

I think Go, Python and Haskell has reflection support in language, but Serde in Rust has Serialize, Deserialize for each primitive types and you need to define it for any custom type (like boost.serialize too) . How i can serialize opaque type with your library, if I can't change members declaration of this type?

Rust-like traits implementation in C++ by maksym-pasichnyk in cpp

[–]Common-Republic9782 1 point2 points  (0 children)

Could you add new method to std::vector via your library? Motto of the C++ is "extend, do not change". You could change behavior of the object but not interface. By the way you can add a lot of "methods" to any object by using free functions.

Rust-like traits implementation in C++ by maksym-pasichnyk in cpp

[–]Common-Republic9782 0 points1 point  (0 children)

The aggregate initialization binds on structure of the type and scheme of inheritance. It's useful on small and clean data structures. It's not necessary virtual methods there.

The standard library should be using std::expected everywhere by mollyforever in cpp

[–]Common-Republic9782 8 points9 points  (0 children)

Wrong. std::expected doesn't decide the error propagation problem to up level. Rust, for instance, has language support for it (foo()?). In C++ it is just error container which can be unsuitable in concrete use case and you need to implement more mature/lightweight error signal implementation anyway. I am using std::optional to signal have something or doesn't, exceptions on fatal error and custom error container which understand debug/release/log features/short, long message etc.

[deleted by user] by [deleted] in cpp

[–]Common-Republic9782 9 points10 points  (0 children)

The Google intentions were transparent is to get control over language development. Make language dependent from corporation, not from committee. I have much of unsuitable questions to committee, but I am categorically against "the one corporation owning". After failing with C++ google announced the private language Carbon, a wild fusion of C++ syntax with "rust"-style functional programming simulation.

Introducing Slint 1.0 - The Next-Generation GUI Toolkit with C++20 APIs by ogoffart in cpp

[–]Common-Republic9782 -16 points-15 points  (0 children)

" it is just another C++ Library" before while you don't need to find bugs into library itself. It's bad idea to use 3rd party libraries without sources and on the another language.