[Issue 17910] Can't have UFCS in aggregate types

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17910

--- Comment #4 from anonymous4 <dfj1esp02 at sneakemail.com> ---
(In reply to Steven Schveighoffer from comment #3)
> make your extension methods global

This destroys encapsulation: what has no business at global scope shouldn't be
there.

> D usually frowns upon having the
> same code mean different things in different contexts.

This is not the case for UFCS.

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