康桓瑋

康桓瑋 has asked 94 questions and find answers to 114 problems.

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康桓瑋 questions

Getting unexpected result when combining [[no_unique_address]] with empty base class inheritance
Combined with C++23 Deducing this and conversion operator with auto return type?
Why does ranges::for_each return the function?
Why can't the compiler use the std::string conversion function of the class when perform operator<<?
The problem of libstdc++‘s implementation of std::declval
How to project elements nestedly in c++20 constrained algorithms?
What is the rationale behind the iterator/sentinel of range adaptors providing the base() accessor?
Why the standard defines borrowed_subrange_t as common_range?
The redundancy of forward_iterator concept?
Why is ranges::basic_istream_view::begin() not cached?

康桓瑋 answers

C++20's std::views::filter not filtering the view correctly
How can I give two compatible names to a C++ class template with deduction guides?
how to use a vector of keys to filter values from a map and produce a set using c++ ranges syntax
What are commonly-used ways to iterate over an enum class in C++?
How can I avoid using #define macros in C++ in a case where I have to concatenate two const char* variables?
C++ how to do structured binding into existing variables?
How to drop the last element using c++20 ranges
Different output while using std::cout and std::println
How do class members behave like functions when used as projections?
std::views::istream with std::views::take