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康桓瑋 has asked 84 questions and find answers to 49 problems.

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康桓瑋 questions

The redundancy of forward_iterator concept?
Why is ranges::basic_istream_view::begin() not cached?
C++20 concepts require operator overloading combine with user-define template operator overloading function
How to define a concept of a object that is can be structured binding?
Assignment operator of std::variant of custom type with deleted special member functions?
what are the constraints for std::ranges::make_heap?
Why does `iota(0) | take(0)` not model ranges::sized_range in C++20?
Ambiguous name lookup with C++20 using-enum-declaration
The mystery of C++20 concept boolean-testable
C++20 std::source_location yield different column numbers between free function and template functions

康桓瑋 answers

Get a pointer to a templated lambda operator () without captures
How to forward a mutable lambda
How to implement a universal function for both sequence and associative container?
Is this correct: std::views::reverse on infinite range?
non type template parameter pack expansion [duplicate]
How does std::visit handle multiple variants?
Is there any practical reason why std::get_if (std::variant) takes a variant argument by pointer instead of by value/&/const&?
C++20 std::source_location yield different column numbers between free function and template functions
Detecting compile-time constantness of range size
Function template accept and return different lambdas