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

6       PDL::Delta - PDL changes between V1.0 and V2.0
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DESCRIPTION

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

13       Piddles are not hashes any more:
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15           $a = zeroes 10,10;
16           $$a{FOO} = "bar"
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18       doesn't work. They are currently scalar references (to opaque C struc‐
19       tures in finer terms) because of speed as well as syntactic issues. If
20       you want to have a hash, use
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22           $a->hdr()
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24       which returns a reference to an anonymous hash. Also, subclassing works
25       if you store a piddle in the hash member ``PDL''.
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27       There are also many core enhancements to support Dataflow and Slicing
28       tricks, but these do not introduce any incompatbilities.
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30       Incompatible Changes vs 1.11
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32       rgrep
33           Order of the arguments has changed.
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35       copy method
36           No longer copies the header. This may not be a misfeature.
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Documentation Changes

39       Many of the base and library pods were updated.
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SEE ALSO

42       The Changes file for exhaustive details on what changed.
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44       The INSTALL file for how to build PDL.
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46       The README file for general stuff.
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HISTORY

49       pdldelta was inspired by perldelta  man page in the perl 5.004 distri‐
50       bution.
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54perl v5.8.8                       2003-05-21                          DELTA(1)
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