The above isn't thread-safe, it isn't even re-entrant, in the same way
that iteration using iterators isn't. This is a known issue whenever you
hand out references, and it's nothing that violates our
const-is-thread-safe promise, otherwise
... which is why we prefer to hand out (implicitly shared) copies rather
than references.
static const QMap map = ~~~;
// T1
map["x"].size();
Our container classes do hand out references, because containers have
to. But in other places we avoid it.
best regards,
Ulf
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