PART 3: Information on Changes Due to IO Grant Work

The IO grant work is at its wrap up. This note lists some of the last-minute changes to the plans delineated in earlier communications ([1], [2], [3]). Most of the listed items do not require any changes to users’ code.

  • We implemented IO::Path.sibling
  • The promised IO::Path.concat-with was instead added as the much shorter IO::Path.add. Due to large ecosystem usage, IO::Path.child was left as is for now. The secure version is already written and .child will be swapped to use it later on; possibly around 6.d time. This will allow more time for users to update to the .add routine, where the secureness isn’t needed.
  • &mkdir multi candidate that takes a list of directories has been removed. IO::Path.mkdir has been changed to return the invocant on success, to mirror the subroutine form’s behaviour
  • The changes to &symlink and &link affected IO::Path.symlink and IO::Path.link as well. The new order of arguments is $existing-thing.symlink: $the-new-thing-we're-creating (same for .link)
  • role IO was promised to be removed. Essentially it was, none of the types that did it do it anymore. However, the role was brought back, to be done by IO::Path and IO::Special. The role provides no methods, but when we’ll make our coercers type-check the results of the coercion, we’ll need IO::Path to be of type IO, or all of our shiny IO() coercers will explode. As IO::Special is meant to be a fake-IO::Path-lite, it does IO role as well.
  • Many of the IO routines were changed from taking Str arguments to taking IO() arguments (Str coerces to IO just fine, so no changes to code are needed on your part). When paths are given as IO::Paths, this avoids needless waste of cycles to convert the IO::Path to Str and then to IO::Path again. More importantly, since IO::Path.Str doesn’t consider $.CWD into account, this fixes all potential bugs where the IO::Path given as arg was created with $.CWD other than current $*CWD

Help and More Info

If you need help or more information, please join our IRC channel and ask there. You can also contact the person performing this work via Twitter @zoffix or by talking to user Zoffix in our dev IRC channel

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