Still, the whole topic of bit_casting is very confusing, but somehow its difficult to even grasp the prerequisites

Still, the whole topic of bit_casting is very confusing, but somehow its difficult to even grasp the prerequisites

About placement new, why should it initialize with zeroes? Normal new won't do that as well in this example, since it performs default initialization, and for std::byte the default initialization doesn't do anything guaranteed with the value

https://en.cppreference.com/w/cpp/language/default_initialization

Oh i see, thank you

Also, does implicit lifetime type mean that its constructor is going to be implicitly called at some point? I've already tried triggering the behavior with GCC but haven't got any constructor call. As getting info from the talk, i suspect that a compiler, once knowing which type i'm gonna use on allocated memory, will implicitly call ctor after the allocation

Guys I have a raycasting code with me but in that code I can't move can anyone help me??

Guys I have a raycasting code with me but in that code I can't move can anyone help me??

#howtoask

Guys I have a raycasting code with me but in that code I can't move can anyone help me??

These are ways you can improve the odds of someone wanting to help you. Be considerate when posting questions. • Use a search engine to check if anyone else had the same question as yours before asking. Stackoverflow is your friend. • Be straight to the point (do not ask to ask.) • Be specific, include as many details as you can. • Show what you've tried to solve the problem • We don't care if anything is "urgent" or "important" - wait patiently for someone to reply. • In addition, please check this site to learn how to ask questions in a public forum. It's good style to limit the amount of messages you send to a public forum; put effort into 1 message, rather than sending many of them, and edit messages to fix errors or to include more information.

Hi

Wanna learn C Any recommendations

Hi

Hi

Can I overload a method in a derived class? I have a set(double a, double b, double c) method in the Piramida class. I want to overload this method in the derived Prav_Piramida class. The overloaded method in Prav_Piramida must accept two set arguments(double a, double b).

Please help me

Can I overload a method in a derived class? I have a set(double a, double b, double c) method in the Piramida class. I want to overload this method in the derived Prav_Piramida class. The overloaded method in Prav_Piramida must accept two set arguments(double a, double b).

You can override the method by marking the function in the base class virtual. I'm not sure if you can overload it (having function with the same name and different arguments).

Please help me

More info about both (just in case) https://www.geeksforgeeks.org/function-overloading-vs-function-overriding-in-cpp/ https://stackoverflow.com/questions/16835897/overloading-base-class-method-in-derived-class

#ot

#ot

Offtopic discussions should be done in the C/C++ Offtopic group. Please take your discussion/questions there.

You can override the method by marking the function in the base class virtual. I'm not sure if you can overload it (having function with the same name and different arguments).

I've been looking for an answer to my question for three days. And I only find how to redefine it.

https://en.cppreference.com/w/cpp/language/constraints Ok, I changed my mind about C++ concepts are cool.

https://en.cppreference.com/w/cpp/language/constraints Ok, I changed my mind about C++ concepts are cool.

I absolutely love them

I absolutely love them

especially with constexpr being that flexible

It's been a while since I looked into C++ I come from another world completely (Java, C, JS, TS)

seeing these features implemented in C++20 is very interesting

It seems like the reflection is going to make it to C++26

It seems like the reflection is going to make it to C++26

I'm not sure this would be useful for C++ to be honest it only makes sense when you have unknown types at runtime which is a design flaw - or a design strength - of weakly-typed languages based on prototypes or relying on a dynamic RT like C#

the one thing I wouldn't complain about is custom attributes like C# or something.

I'm not sure this would be useful for C++ to be honest it only makes sense when you have unknown types at runtime which is a design flaw - or a design strength - of weakly-typed languages based on prototypes or relying on a dynamic RT like C#

Compile time reflection would be VERY useful in C++

Compile time reflection would be VERY useful in C++

Ah, you mean at compile-time

It'd allow to nuke all the code generation tools

I agree

It seems like the reflection is going to make it to C++26

That would be absolutely crazy, I would start cleaning up so many projects

That would be absolutely crazy, I would start cleaning up so many projects

Well Bloomberg published their PoC clang implementation for this proposal: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2996r0.html, so I have my hopes high

Is it possible to get size of type in run-time? Like sizeof(), but in run-time

Is it possible to get size of type in run-time? Like sizeof(), but in run-time

How do you store the type in run-time?

How do you store the type in run-time?

smth like RTTI?

/get markdown

/get markdown

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smth like RTTI?

To get the size of a type, you need to know it somehow. Since you need to so "sizeof" in run-time, you need to store it somewhere

If I had to guess, you need some kind of serialization

hi all

I have a type conflict issue when using typedef. typedef uses in the library. is there anyway to make the use of these typdefs local only to the library ( *.h)?

I'm not counting on a solution because I can't imagine how to resolve two identical names. but I'm thinking of a suggestion on how to get around this or suggestions for a small change to the library code

it's in the libecc library I don't think the type change is in .h will be fine. because the library is cryptographic

real example code file.h ... typdef unsigned int size_t; ... main.c #include "file.h" ... #include <std...> // typedef long unsigned int size_t; ...

damn, I'm lucky they're not used in the code I'm using. but I'll leave the problem, I'd be interested in what can be done about it.

can't you re-typedef it to a different type?

User Roya has 1/2 warnings; be careful! Reason: no hello, read the rules

User Amisha has 1/2 warnings; be careful! Reason: ad

can't you re-typedef it to a different type?

It seems like the reflection is going to make it to C++26

Oh cpp already has it https://youtu.be/UlNUNxLtBI0?si=SieO8-UZ40ULpjKX

Oh cpp already has it https://youtu.be/UlNUNxLtBI0?si=SieO8-UZ40ULpjKX

No it doesn't. This is very limited and very a "workaround" (nicely speaking) solution

No it doesn't. This is very limited and very a "workaround" (nicely speaking) solution

If we had thrown more Antonys at the problem, Boost would have these features way sooner. The community wants to write javascript providing 2+ ways of doing the same, clearly

If we had thrown more Antonys at the problem, Boost would have these features way sooner. The community wants to write javascript providing 2+ ways of doing the same, clearly

This is stupid. Hacking something to use it for the thing it's not intended for is just not a solution and never will be.

I just wanted notes

it's in the pinned message

We need to ban asking for notes here

We need to ban asking for notes here

Sorry

Sorry

/warn pming

Sorry

User Vivek.​S has 1/2 warnings; be careful! Reason: pming

User Rajat has 1/2 warnings; be careful! Reason: homework/assignment demand

User Levis Orina has 1/2 warnings; be careful! Reason: no hello

Another one bites the dust...! Banned Levis Orina. Reason: spam

Another one bites the dust...! Banned Itachi. Reason: pm, spam, illegal

Hi all

Can you suggest a library to work with eddsa ?

That's 2/2 warnings; Amisha is banned! Reasons: 1: ad 2: linkedin ad

#projects

#projects

Please check the Resources section for links on Open Source Projects in C/C++ some of which are explained from scratch.

how to learn design pattern using c++? are there some useful projects?

how to learn design pattern using c++? are there some useful projects?

Some projects have a section Hacking. Usually it says how to take part in the development of the project

And it also says how they prefer to conduct development. (This is in all large projects)

I think reading how they prefer to conduct joint development is what you need

Thank U, and do you have some recommended open source projects? there are too much information on the Google, and I don't know how to choose a project that is right for me😢

Thank U, and do you have some recommended open source projects? there are too much information on the Google, and I don't know how to choose a project that is right for me😢

tor ?)

tor ?)

Its only a guess but, it seems they want to "Contribute to Open Source".

Thank U, and do you have some recommended open source projects? there are too much information on the Google, and I don't know how to choose a project that is right for me😢

What are your interests? I like game dev, so I go around looking at issues for anything related. I also don't feel that u need to commit to a single project.

What are your interests? I like game dev, so I go around looking at issues for anything related. I also don't feel that u need to commit to a single project.

I'm just a beginner, and I want to learn how to build a complete project properly by myself. I'm also interest in game dev, but I don't have enough ability now. I guess I should begin with dev some small tools?

I'm just a beginner, and I want to learn how to build a complete project properly by myself. I'm also interest in game dev, but I don't have enough ability now. I guess I should begin with dev some small tools?

How much of a beginner are you? I know some people who are skilled but call themselves beginners. This is a rough measure but, open up any project in github (don't care how hard or easy it is) n read through the code. How much of it can u make sense off and how fast?

How much of a beginner are you? I know some people who are skilled but call themselves beginners. This is a rough measure but, open up any project in github (don't care how hard or easy it is) n read through the code. How much of it can u make sense off and how fast?

I've done over 400 problems on the leetcode using c++, but I have never programed a practical application. Your suggestion is useful, I'll try and reply, thanks!