[xani_]

Uh,those features are here for almost decade now, some longer IIRC.

But man, just being able to write

   use v5.10

have been a blessing when you need to support some legacy infrastructure. Old Python broke after upgrades, Ruby broke, but Perl code keeps on trucking.

In vast majority of cases the code changes were just "well, the new version of lib gives some warnings about deprecation, might as well clean it up a bit". The minority of cases has been Mojolicious breaking stuff again.