How to share an appender!string?

[captaindet via Digitalmars-d-learn]

On 2016-05-20 07:49, Era Scarecrow wrote:
>   Experimented and quickly got what looks like good clean results. Took
> your code, ripped out what I didn't want and added in what I did. Simple!
>
>   https://dpaste.dzfl.pl/6952fdf463b66

i am most curious about your solution.

why does printAll() has a synchronized block? in case you would call it 
before thread_joinAll() i.e. before all threads are terminated?

then again, why is there a synchronized block necessary in printAll() at 
all? it is only reading out data, not writing.

(i am still learning the subtleties of multithreading.)

/det