initialization immutable array

[AntonSotov via Digitalmars-d]

On Thursday, 15 May 2014 at 17:15:50 UTC, Steven Schveighoffer 
wrote:
> Assign _items only once in the constructor.
> 
> immutable(int)[] tmp;
> 
> foreach(i; 1..4)
>    tmp ~= i;
> 
> _items = tmp;

thanks for example!

On Thursday, 15 May 2014 at 17:15:50 UTC, Steven Schveighoffer 
wrote:
> This should not work IMO.

My second example compiles successfully and displays the correct 
result - that's why I became interested in why it works.
you can compile yourself.

On Thursday, 15 May 2014 at 16:58:04 UTC, Yota wrote:
> Here are a couple ways to initialize the array:
>
> 1:
>   this() {
>     import std.exception : assumeUnique;
>     int[] items;
>     foreach (i; 1..4) {
>       items ~= i;
>     }
>     _items = items.assumeUnique;
>   }
>
> 2:
>   this() {
>     // The result of a pure function may be implicitly cast to 
> immutable.
>     _items = function() pure {
>       int[] items;
>       foreach (i; 1..4) {
>         items ~= i;
>       }
>       return items;
>     }();
>   }

thanks for example!

On Thursday, 15 May 2014 at 16:58:04 UTC, Yota wrote:
> As for the second example, that looks like a bug to me.

if this is actually a bug - will be good if someone could 
register it.