Inability to dup/~ for const arrays of class objects
Steven Schveighoffer
schveiguy at yahoo.com
Thu May 30 09:56:46 PDT 2013
On Thu, 30 May 2013 12:46:39 -0400, Maxim Fomin <maxim at maxim-fomin.ru>
wrote:
> Please provide reasons why it is wrong (but without explanation how
> druntime allocates memory which is irrelevant).
It's wrong in that D's spec re-defines dynamic arrays from the traditional
definition (I think for the sake of simplicity, but I didn't write the
definition, so I'm not sure). D's slices aren't dynamic arrays, no matter
how many specs say so.
> That's nice to hear, but at that point there would be no point for
> discussions. I see no roots from where contradictory definition in
> article comes from.
It comes from the experience of observing anyone who knows what a dynamic
array is, comes to D, sees from the spec that it's T[], and then gets
confused when T[] does not act like the dynamic array they know from C++,
Java, C#, etc.
In other words, explaining countless times on the newsgroups how slices
work prompted me to write the article. It's not an easy concept to grasp.
-Steve
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