core::ops::Range also needs to support slicing, so there is no interval. but for scenarios like loops, interval is sometimes useful. Is it considered to add a core::ops::RangeInterval and possibly with syntactic sugar?
You can write (start..end).step_by(step), although step is usize, not the same type.
Do you have any ideas for syntactic sugar?
(There's not a lot of room for new syntax in expressions.)
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