You can always specify the type. let foo: T = bar.parse()?; // or let foo = bar.parse::<u32>()?; baz(foo); In my experience I've never found this to be surp

You can always specify the type. let foo: T = bar.parse()?; // or let foo = bar.parse::<u32>()?; baz(foo); In my experience I've never found this to be surprising behavior, or unclear.