How about appender.put() with var args?

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On Thursday, 16 April 2015 at 03:53:56 UTC, Andrei Alexandrescu 
wrote:
>> Sidetracking a bit, but when I started using Appender I was 
>> surprised to
>> see that put didn't return a reference to the Appender itself. 
>> Had it
>> done so, you could have chained your put calls very nicely.
>>
>> app.put("foo")
>>    .put(var)
>>    .put("bar")
>>    .put(more)
>>    .put("stuff");
>>
>> You can naturally write a small wrapper function that does 
>> this for you,
>> but it still strikes me as odd. Sadly I imagine changing the 
>> return type
>> would make the function signature mangle differently, breaking 
>> ABI
>> compatibility.
>
> Does ~= chain? -- Andrei

I'm not sure I understand.

Appender!string app;

app ~= "hello"
     ~= " "
     ~= "kitty";

--> Error: Cannot modify '" "'

Is the order of evaluation not such that this becomes app ~= 
("hello" ~= (" " ~= "kitty"))?