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Description
kw::Empty
is the name of the empty Symbol
. It's used a lot. Most places it's used, it's hard to tell if it means "empty symbol" or "no symbol". I.e. it more or less reinvents the null pointer, something that Rust was supposed to get rid of.
I think a lot of the uses could be removed by using Option<Symbol>
instead of Symbol
, making the "no symbol" cases much clearer.