[#207] Add `whenNone` to Lorentz
Description
Problem: Oddly Lorentz
has a macro for whenSome
that does nop
on the none
branch of an ifSome
, but does not have a macro to do
the opposite.
Solution: Add whenNone
to Lorentz.Macro
.
Related issue(s)
Resolves #207 (closed)
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