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康桓瑋 has asked 98 questions and find answers to 130 problems.

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康桓瑋 questions

Why std::ranges::view_interface using CRTP
Why does `zip_view` not support `output_range`?
What is the ideal way to customize the separators and brackets for formatting ranges?
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?

康桓瑋 answers

Cannot convert rvalue std::array to std::span
Allow std::expected to use a private constructor
Printing a std::map using a std::range::copy and an adaptor
How to check that a type is 'formattable' using type traits / concepts?
Lambda to function using generalized capture impossible?
std::format behaving different. between signed char / unsigned char
Is there any standard functionality for creating a flattened view of a map with a container as the mapped_type?
How to generate a specific iterator in c++
What would be the C++20 concept for an iterable container?
"std::format"ing std::chrono seconds without fractional digits