[Issue 9947] reduce of an array of structs with an immutable field

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=9947


monarchdodra at gmail.com changed:

           What    |Removed                     |Added
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           Severity|normal                      |enhancement


--- Comment #4 from monarchdodra at gmail.com 2014-03-31 06:17:15 PDT ---
Yes, I think this is invalid, because the documentation states:
//----
Then, for each element $(D x) in $(D range), $(D result = fun(result, x)) gets
evaluated.
//----

And here, the type is not assignable, even when unqualed.

That said, a recursive "divide and conquer" fold could support such a case. I'm
leaving this open as en ER.

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