Does D have too many features?
Timon Gehr
timon.gehr at gmx.ch
Sun Apr 29 01:22:45 PDT 2012
On 04/29/2012 06:36 AM, Andrej Mitrovic wrote:
> On 4/29/12, Timon Gehr<timon.gehr at gmx.ch> wrote:
>> - 'in' operator returning a pointer to the element.
>
> AFAIK this is a property of how the opIn_r function is implemented,
> nothing much to do with the language itself.
>
Well, AAs are part of the language.
> But it does allow for some neat tricks, like:
>
> int[int] hash;
> hash[1] = 2;
> int value = *enforce(1 in hash, new Exception("1 not in hash"));
> assert(value == 2);
> or:
> if (auto val = 1 in hash)
> ...use val pointer (+ if it's a class/struct pointer you still
> have access to the dot syntax)
> else
> ... errors..
I know, but 'in' is somewhat of a misnomer. Anyway, it is not a huge issue.
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