require_sizeof
Synopsis
Declared in <folly/Traits.h>
template<typename T>
constexpr std::size_t require_sizeof = detail::require_sizeof_<void, T>::size;Description
Equivalent to sizeof, but with a static_assert enforcing that application of sizeof would not fail substitution.
Application of sizeof fails on the following kinds of types: * function types. * incomplete types, including possibly‐cv‐qualified void * references to types to which application of sizeof would fail
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