Function frunk_proc_macro_helpers::build_hlist_constr

pub fn build_hlist_constr<L: IntoIterator>(items: L) -> TokenStream2 where
    L::Item: ToTokens,
    L::IntoIter: DoubleEndedIterator, 

Given a list of expressions or patterns, creates an AST for the corresponding HList constructor, which may itself be used as an expression or a pattern.