On Thu, Apr 26, 2018 at 09:36:48AM -0700, Mike Miller wrote: > However, there were two good questions in this message which I haven't seen > addressed yet: > > - How are other modern languages solving this issue? > - How does this new construct intersect with typing functionality? What counts as a modern language? Less than five years old? Less than fifty years old? Are Javascript, Ruby and R modern? They all support assignment as expressions. I think Koitlin, Rust and Go prohibit assignment as expressions. Swift assignment evaluates as Void (equivalent to None in Python, I guess), so you can use assignment in an expression but it returns nothing and only operates by side-effect. As far as type hints go, I think that if you need explicit type hints in the middle of an expression, it's a bad idea and you ought to pull it out as a separate statement. That applies regardless of whether that expression involves binding or not. -- Steve
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