[C++ korea] effective modern c++ study item 6 use the explicitly typed initializer idiom when auto deduces undesired types +방기연
[C++ korea] effective modern c++ study item 4 know how to view deduced types +이윤지
[C++ korea] effective modern c++ study item 5 prefer auto to explicit type declarations +이홍우
[C++ korea] effective modern c++ study item 2 understanding auto type deduction +손건