template instance template 'appender' is not defined

[Assembly via Digitalmars-d-learn]

On Sunday, 31 May 2015 at 21:32:34 UTC, Ali Çehreli wrote:
> On 05/31/2015 02:30 PM, Assembly wrote:
>> So after a while without write any D code (such a sad time) 
>> I'm back. I
>> needed to use appender but it returned a compile error:
>>
>>> template instance template 'appender' is not defined
>>
>> I've imported the std.format module but it still doesn't 
>> works. What
>> changed? did this moved to somewhere else or what? the 
>> documentation
>> still says that it's in the std.format module
>> (http://dlang.org/phobos/std_format.html). I guess I need to 
>> read the
>> break changes log since the version I'm using?
>>
>> My machine: Windows 8.1 and dmd version v2.066.0.
>
> appender is in std.array.
>
> Ali

why that page I've linked use std.format?