Troubles creating templated inout objects
Timoses
timosesu at gmail.com
Thu Jul 12 14:17:49 UTC 2018
On Thursday, 12 July 2018 at 12:22:34 UTC, Steven Schveighoffer
wrote:
> On 7/11/18 8:55 AM, Timoses wrote:
>> class TestA(T : T[])
>> {
>> Test!T[] arr;
>>
>> // ERROR: Can't initialize inout variable in
>> a for loop...
>> this(inout(T[]) arr) inout
>> {
>> // 1: Nope
>> foreach (mem; arr)
>> this.arr ~= test(mem);
>>
>> // 2: Nope
>> //Test!T[] a;
>> //foreach (mem; arr)
>> // a ~= test(mem);
>>
>
> On the right track, but inside inout (or const or immutable)
> constructors, the members can only be initialized once. So you
> have to initialize a local, and then set the member once.
>
> The issue is, your input is *also* inout (a necessary
> condition), so you didn't declare a properly:
>
> inout(Test!T)[] a;
> foreach (mem; arr) a ~= test(mem);
> this.arr = a;
>
> -Steve
Aw, thanks! This is much nicer than casting...
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