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Description of the most important classes, functions and objects of the Standard Language Library, with descriptive fully-functional short programs as examples.
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by kitfox

Will my compiler automatically reuse the return value of this method? [General C++ Programming]

I'm wondering if my compiler will be smart enough to realize that the determinant() of this matrix has already been calculated and will reuse the value that was...

[2 replies] Last: I agree the answer is no, the compiler is not smart enough in general,... (by Ganado)

by TheIdeasMan

Proposal for explict keyword for non constructor functions [General C++ Programming]

So we have the explicit[/code] specifier for constructors, would it be better if we could have [code]explicit[/code] for any type of callable functions as well...

[4 replies] Last: Cheers seeplus[/b] Also kind of related to this is the idea of list ... (by TheIdeasMan)

by Duthomhas

Sigh. War. (1,2) [Lounge]

Looks like “the president of peace” has finally managed to start an actual war. Venezuela capitulated too easily for his liking, I guess.

[21 replies] Last: Thank you Ganado 🥺🥲 I think these debates are interesting - and eve... (by zapshe)

by Ganado

Why must base class be constructed before derived members? [General C++ Programming]

I ran into this problem when trying to encapsulate behavior into an existing, rigid structure of a project I'm working on. See both the DerivedBad and Derive...

[5 replies] Last: MS VS doesn't produce a warning - which would be useful as I've been d... (by seeplus)

by leander g

Interacting with a vector of objects derived from base class [Beginners]

I am currently trying to wrap my head around how to actually work with derived / inherited classes, how to set up a little "tree" of such classes and how to sto...

[7 replies] Last: Like for a game where the player can have different types of items in... (by seeplus)

by kitfox

What's the proper way to set a std::vector to another std::vector? [General C++ Programming]

I'm trying to figure out the optimal way to do this assignment. Right now I'm just doing a simple assignment, but was wondering if using std::swap() would be b...

[5 replies] Last: The outermost loop is what bothers me most. Assuming that there is at ... (by newbieg)

by zapshe

Sunk Cost Fallacy [Lounge]

Helios - we once debated whether it was a sunk cost fallacy for a college student to say something along the lines of, "I'll finish college, after all, I've alr...

[3 replies] Last: Helios hates me 😔 (by zapshe)

by Heyyo53

Implementation of headers [General C++ Programming]

I've recently been learning about command-line commands and how all that stuff works and I have gotten curious, for various of the standard headers in C++ (such...

[3 replies] Last: I see! thank you for the sources and stuff, I will have to check them ... (by Heyyo53)

by AbstractionAnon

Pure virtual calls not resolving [General C++ Programming]

Using VS 2022 Version 17.14.25 Having trouble getting pure virtual calls to link. I have a solution with a main project and several DLLs. The main class inher...

[2 replies] Last: Got it. Thanks. (by AbstractionAnon)

by Ganado

C++ Reflection Cppcon demo [Lounge]

CppCon recently publicly released a video where Herb Sutter demos C++26 reflection features. It’s actually pretty exciting to me. As he mentions in the video, I...

[5 replies] Last: I mean I didn’t watch the full video, I lost interest when they starte... (by Ganado)