formattedWrite writes nothing

[Andrej Mitrovic via Digitalmars-d-learn]

On 5/2/14, ref2401 via Digitalmars-d-learn
<digitalmars-d-learn at puremagic.com> wrote:
> class MyClass {
> 	Appender!string _stringBuilder;
>
> 	this() {
> 		_stringBuilder = Appender!string(null);
> 		_stringBuilder.clear();

Ouch, ouch, ouch! What's happening is that the 'clear' Appender method
is only compiled-in if the data is mutable, otherwise you end up
calling the object.clear UFCS function. So don't use clear here.

I don't know if this is a case of poor method naming or another
downside of UFCS. Luckily 'clear' is being renamed to 'destroy' in the
object module, so this specific case will not become a problem in the
future.