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                      Series Version 2.0 RELEASE NOTES

                           Fernando D. Mato Mira
           CSEM (Centre Suisse d'Electronique et de Microtechnique)
                Jaquet-Droz 1, CH-2007 Neuchatel, Switzerland
                             matomira@acm.org


                              3rd March, 2000

***NEW SPECIFICATION RESTRICTIONS***
------------------------------------

1. The gatherers introduced by GATHERING have DYNAMIC extent, unless
   explicitly declared INDEFINITE-EXTENT.
   
   If you need them to be indefinite extent by default,
   evaluate (pushnew :cltl2-series) before compilation (or interpreted load)

   After loading series :cltl2-series will indicate if backward-compatibility
   mode is enabled.

   Rationale for this change: 
    "Weird code must be the one escaping gatherers so created"
    "WHO EVER DID THAT???"


NEW FEATURES:
------------

- GATHER-NEXT
  A macro with the same effect as the NEXT-OUT function, but with result undefined.
- GATHER-RESULT
  A macro with the same semantics as the RESULT-OF function,
- FGATHER-NEXT
  Like GATHER-NEXT, but the gatherer argument must be a symbol denoting a gatherer bound by FLET.
- FGATHER-RESULT
  Like GATHER-RESULT, but the gatherer argument must be a symbol denoting a gatherer bound by FLET.
- FGATHERING
  Like GATHERING, but where the gatherers are bound by FLET instead of LET.
  Same extent rules as for GATHERING apply. Remember that where you would use
  (declare (indefinite-extent g)) inside GATHERING, you need to do 
  (declare (indefinite-extent #'g)) with FGATHERING.
- GATHERLET
  The basic construct upon which GATHERING rests. No automatic return
  of gatherer results. And no extent assumptions, of course. If you want
  something dynamic-extent, you'll have to declare it.
- FGATHERLET
  The `F' version of GATHERLET. Duh.
- COLLECT-PRODUCT
  Like COLLECT-SUM, but for #'*. How more obvious does it get?
- INDEFINITE-EXTENT
  Declaration exported.

IMPROVEMENTS:
------------
- MACROLETs or CLOS::VARIABLE-REBINDING declarations do not block optimization under LispWorks.
- Better code generation
  - Replaced some SETQs by initializations at LET binding time.
  - Removed global function namespace pollution.
  - Encapsulated series subfunctions.
- Source clean up.
  Local series functions are almost there (FLET extension)
  Bottom-up definition for improved compilation.
  Make source `FLET and LABELS ready'.
  `readability/documentation' release.
  Some work done towards multiple assignment support in PRODUCING.


BUG FIXES:
---------
- Does not unintern EXT:COLLECT and EXT:ITERATE anymore under CMUCL!!!
- GATHERING et al. are not bitten by CMUCL DEFSTRUCT bugs.


COMPILING
--------
(load "s-package")
(compile-file "s-package")
(compile-file "s-code")

LOADING
-------
(load "s-package")
(load "s-code")

TESTING
-------
Load SERIES, then:
(compile-file "s-test")
(load "s-test")
(user::do-tests)

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