Dimitre and Stuart,

>It is not necessary to know the maximum length of the string to
>produce.
>
>Using FXSL template "iter" one simply writes the following:
>
[...]

thank you for your answers. They both work, although the iter template is
of course more
powerful and more elegant than an variable with a maximum length. I didn´t
know that
a library like FXSL exists, so thanks for that info, too!

Julia




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