[Development] Question about QCoreApplicationData::*_libpaths
marc.mutz at kdab.com
Fri Jan 22 19:13:32 CET 2016
On Friday 22 January 2016 17:44:40 Thiago Macieira wrote:
> On Friday 22 January 2016 11:14:47 Marc Mutz wrote:
> > On Friday 22 January 2016 09:57:00 Иван Комиссаров wrote:
> > > What
> > > i'm missing?
> > You haven't done the exercise with the int first.
> Here's the exercise with int. This is thread-safe:
> int f()
> return 1;
> auto x = f();
> No matter how many threads call f(), all of them will get a value from f,
> can assign it to a variable and modify without caring what other threads
> Replace int with QMap or QString and you have the same behaviour.
This part of the discussion was about copying a container. You return a new
instance instead. Returning a new instance does not copy, nor move, due to
Marc Mutz <marc.mutz at kdab.com> | Senior Software Engineer
KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company
KDAB - The Qt Experts
More information about the Development