[Issue 9656] Built-in dup result should behave as like unique array, if it is possible.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9656



--- Comment #5 from bearophile_hugs at eml.cc 2013-04-30 09:48:13 PDT ---
(In reply to comment #4)
> But maybe we should have a language-level way (like an
> annotation) to denote some reference data as unique.

I am ignorant regarding the compiler, but ,aybe in the meantime it's enough to
have an invisible "unique" attribute used just by the compiler-front end, like
the various PUREimpure, PUREfwdref, etc used in the compiler.

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