Macro flexible_array_impl

macro_rules! flexible_array_impl {
    ($T:ident, $S:ident, $nents:ident, $entries:ident) => { ... };
}

Always use this macro for implementing the FlexibleArray<S> trait for a given T. There exists an 1:1 mapping of macro identifiers to the definitions in the FlexibleArray<S> documentation, so refer to that for more information.