On Fri, May 31, 2019 at 11:55:15AM -0700, Diab Jerius (via RT) wrote: > The documentation describes its use only in the negative, e.g. when explaining > how > > use v5.10.0; > > works via > > no feature ':all'; > use feature ':5.10'; > > Is there a reason that one should not use ':all' positively? As in > > use feature ':all'; It defeats the whole purpose of feature.pm - which is to allow us to add new features to perl which are not backwards compatible. If people start adding "use feature ':all'" to their programs, then their programs may break on future releases of perl. If lots of people start adding it, then we'll be told that we can't add a new feature to perl because it would break too many existing modules that people reply on. So we'd have to introduce "reluctant" features which aren't enabled by ':all'; then we'd have to add ':really_all', then that would be abused, and so the cycle continues. -- The Enterprise is involved in a bizarre time-warp experience which is in some way unconnected with the Late 20th Century. -- Things That Never Happen in "Star Trek" #14Thread Previous | Thread Next