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xmllmx has asked 374 questions and find answers to 11 problems.

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xmllmx questions

Why does the vc++ 2019 not accept the code?
Is struct A { int a[2] = {1, 2}; }; legal as per C++11?
Which is better to check if a character exists in a std::string? find or find_first_of?
Why does the parameter pack not work as expected in concepts?
Is it safe to swap two integers by `a, b = b, a` in golang?
Must T be unqualified in std::allocator<T>?
Why does the Linux C API 'open' support function overloading? [duplicate]
Is `int(int) const` a valid function type in C++23?
Why add redundant `std::constructible_from<T>` to the concept `std::default_initializable`?
Why does std::map not always allow a compatible type as its key type?

xmllmx answers

Why does the parameter pack not work as expected in concepts?
Must T be unqualified in std::allocator<T>?
What replaces std::codecvt_utf8 in C++17 or how else do I convert an int to a u32 string? [duplicate]
What's the substitution of <codecvt> in C++17 or later? [duplicate]
Deprecated header <codecvt> replacement
how to pass arrays as parameters in constructor? c++
C++11 function definitions with auto keyword