Flow scoping

Brian Goetz brian.goetz at oracle.com
Fri Jan 4 13:47:23 UTC 2019

>> For some, this is uncomfortable at first, as not only does the scope bleed into the full `if` statement, but it bleeds out of it too. 
> This seems readily explainable in the same way that other
> "fall-throughs" work: There is an implicit else spanning the rest of the
> block. Which is just a syntactic convenience to decrease brace-levels.
> So it doesn't seem very worrisome on these grounds. 

This is certainly this intuition that guided us here; it should be possible to freely refactor

    if (e) 
        throw x;
    else { stuff }


    if (e) throw x;

and it would be sad if we could not.

> Although I wonder
> whether style guides requiring explicit braces will require them here.

Some style guides surely will, and that’s fine.  

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