Give an optional type hint to lhs of ||
#874
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soutaro
commented
Jul 14, 2023
| "a.rb" => <<~RUBY | ||
| class Hello | ||
| def foo(a) | ||
| a&.then {|x| x.infinite? } || -1 |
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Steep reported a confusing type error:
Cannot find compatible overloading of method `then` of type `::Integer`
It was because the hint given to &.then call is Integer, and it is forwarded to block typing where x.infinite? has Integer?.
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