HolyBlackCat

HolyBlackCat has asked 103 questions and find answers to 387 problems.

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HolyBlackCat questions

Does it make sense to use a relaxed load followed by a conditional fence, if I don't always need acquire semantics?
Is creating an object not the same thing as starting its lifetime?
What precisely is an expression?
Are there any remaining differences between member and non-member comparisons starting from C++20?
How do I use std::formatter directly?
How do I make a templated conversion operator to `std::optional<T>`?
In a false `if constexpr` branch outside of a template, are bodies of called template functions instantiated or not?
In C++26, are implementations required to "initialize" uninitialized variables to some fixed byte pattern?
In a lambda, what does the second list of attributes do?
Why set the stop flag using `memory_order_seq_cst`, if you check it with `memory_order_relaxed`?

HolyBlackCat answers

"Unpacking" macro arguments
What's the use of <ratio> when we have contexpr values?
How to define type trait for containers with index operator?
Using universal references with non template types?
Using preprocessing directive #define for long long
How to add a run button in Visual Studio Code?
why does 'using namespace' not take priority when in a namespace
pointer-to-member syntax difference in g++ 13 (Linux) vs. g++ 14 (Windows)
c++ logging - how to write a conditional macro for insertion operator that does nothing
`if constexpr` in fold expression