appender!(dchar[]) put fail

[Quentin Ladeveze via Digitalmars-d-learn]

On Saturday, 13 June 2015 at 12:02:10 UTC, kerdemdemir wrote:
>
>> The problem is that your appender is a char appender, and you 
>> try to put a dstring into it. Replace :
>>
>> charAppender.put(totalStr);
>>
>> by :
>>
>> foreach(elem; totalStr){
>>   charAppender.put(elem);
>> }
>>
>> elem will be a dchar, so it will work.
>
>
> But I can see in the example of 
> array.appander(http://dlang.org/phobos/std_array.html#appender)
>
> int[] a = [ 1, 2 ];
> auto app2 = appender(a);
> app2.put(3);
> app2.put([ 4, 5, 6 ]);  ---> appender accepts another array.
>
> Why this is not same with dchar ?

It is the same, but totalStr is not a dchar[]. It's a Result (a 
type internal to the chain function ) which is a range. The 
foreach loop iterates over Result, which returns dchar[].

So if you try to do something like that :

charAppender.put(totalStr.array), it won't work because 
totalStr.array is a dchar[][].