[Development] Use of std::function in Qt API

Ville Voutilainen ville.voutilainen at gmail.com
Tue Apr 25 18:34:43 CEST 2017

On 25 April 2017 at 17:34, Lars Knoll <lars.knoll at qt.io> wrote:
>> On 25 Apr 2017, at 15:51, Thiago Macieira <thiago.macieira at intel.com> wrote:
>> Em terça-feira, 25 de abril de 2017, às 07:59:03 -03, Marc Mutz escreveu:
>>> What's holding us back?
>> At this point, inertia.
>> I've already lifted my objection in the grounds that no one in the Linux
>> sphere cares about compatibility between libstdc++ and libc++ without a
>> "rebuild the world" step.
>> Using the standard library requires a QUIP with the allowed classes and the
>> allowed uses of those classes, as I'm sure we'll find incomplete or non-
>> standard implementations of them in the many platforms and compilers we need
>> to support.
> We concluded that we don’t want to be responsible for the stdlib breaking compatibility or compatibility between libstdc++ and libc++. So in that respect, we should be able to more freely to use more of the standard library, as long as the parts we’re using are supported on all our platforms.
> But I agree with Thiago, that we should have this written down in a QUIP, ideally with a list of the classes we consider ok to use in our APIs.

Sounds like a good idea, because things like std::vector are becoming
part of our API and ABI. :)

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