Sprint can be handy when you wish to format text for a Logger
        or similar, since it avoids heap activity during conversion by
        hosting a fixed size conversion buffer. This is important when
        debugging since heap activity can be responsible for behavioral
        changes. One would create a Sprint instance ahead of time, and
        utilize it in conjunction with the logging package.

        Please note that the class itself is stateful, and therefore a
        single instance is not shareable across multiple threads. The
        returned content is not .dup'd either, so do that yourself if
        you require a persistent copy.

        Note also that Sprint is templated, and can be instantiated for
        wide chars through a Sprint!(dchar) or Sprint!(wchar). The wide
        versions differ in that both the output and the format-string
        are of the target type. Variadic text arguments are transcoded
        appropriately.

        See also: tango.text.convert.Layout