On Sat, May 10, 2014 at 03:39:51PM -0700, Thiago Macieira wrote: > Em sáb 10 maio 2014, às 22:04:26, Sune Vuorela escreveu: > > On 2014-05-10, Thiago Macieira <thiago.macie...@intel.com> wrote: > > > How do you make 5.3.0-rc1 compare less than 5.3.0? > > > > we call them 5.3.0~rc1. > > And how does "5.3.0~rc1" compare less than "5.3.0"? > > Anyway, you can't change the version string. Please note requirements from > the > original post: > > > - Plugin loading where there are multiple versions on the same system. > > - File format validation. > > - Executing an already installed command line application where the > > behavior is dependent on the called application's version. > > - Performing software installations and updates. > > - QMake support for version number comparisons. > > Four of the five of those require parsing input that other people create. > this is rather obviously a no-win situation.
the only use case for an actual class i buy is the first one (and maybe the fourth one), which can be cleanly implemented with a minimalistic implementation of semver. independently from that, we can implement a plain natural compare function for strings (which treats groups of digits as numbers, not as unicode values). any a-priori transformations needed to make it actually work with random versioning schemes are highly specific, and should therefore be left to the user. arbitrary policies totally do not belong into a generic low-level class in qtcore. _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
