Why does std::optional::operator=(U&&) require U to be a non-scalar type?
来源： https://stackoverflow.com/questions/53052395/why-does-stdoptionaloperator-u-require-u-to-be-a-non-scalar-type
c++17
Why does std::optional::operator=(U&&) require U to be a non-scalar type?
来源： https://stackoverflow.com/questions/53052395/why-does-stdoptionaloperator-u-require-u-to-be-a-non-scalar-type
Rationale of restrictive rules for extract and re-insert with map
来源： https://stackoverflow.com/questions/53209889/rationale-of-restrictive-rules-for-extract-and-re-insert-with-map
Base case specialization for recursive variadic template
来源： https://stackoverflow.com/questions/64118868/base-case-specialization-for-recursive-variadic-template
C++ lambda default arguments compiler misbehavior?
来源： https://stackoverflow.com/questions/64387023/c-lambda-default-arguments-compiler-misbehavior
What is the significance of returning the return value of a lambda expression from a function?
来源： https://stackoverflow.com/questions/63767805/what-is-the-significance-of-returning-the-return-value-of-a-lambda-expression-fr
Template deduction guide for function?
来源： https://stackoverflow.com/questions/42780030/template-deduction-guide-for-function
Partial class template argument deduction in C++17
来源： https://stackoverflow.com/questions/57563594/partial-class-template-argument-deduction-in-c17
not-constexpr variable in if constexpr – clang vs. GCC
来源： https://stackoverflow.com/questions/48826555/not-constexpr-variable-in-if-constexpr-clang-vs-gcc
A issue about the class member access while the nominated data member is of reference type
来源： https://stackoverflow.com/questions/63663887/a-issue-about-the-class-member-access-while-the-nominated-data-member-is-of-refe