DragonFly On-Line Manual Pages

DELTA(1)              User Contributed Perl Documentation             DELTA(1)

NAME
       PDL::Delta - PDL changes between V1.0 and V2.0

DESCRIPTION
       This file is an attempt to list the major user-visible changes between
       PDL versions 1.0 and 2.0.

Core Changes
   Piddles are not hashes any more:
           $a = zeroes 10,10;
           $$a{FOO} = "bar"

       doesn't work. They are currently scalar references (to opaque C
       structures in finer terms) because of speed as well as syntactic
       issues. If you want to have a hash, use

           $a->hdr()

       which returns a reference to an anonymous hash. Also, subclassing works
       if you store a piddle in the hash member ``PDL''.

       There are also many core enhancements to support Dataflow and Slicing
       tricks, but these do not introduce any incompatibilities.

   Incompatible Changes vs 1.11
       rgrep
           Order of the arguments has changed.

       copy method
           No longer copies the header. This may not be a misfeature.

Documentation Changes
       Many of the base and library pods were updated.

SEE ALSO
       The Changes file for exhaustive details on what changed.

       The INSTALL file for how to build PDL.

       The README file for general stuff.

HISTORY
       pdldelta was inspired by perldelta  man page in the Perl 5.004
       distribution.

perl v5.20.2                      2015-05-24                          DELTA(1)