From: gautier_niouzes@hotmail.com
Subject: Ann: Zip-Ada v.52
Date: Sat, 8 Oct 2016 04:56:14 -0700 (PDT)
Date: 2016-10-08T04:56:14-07:00 [thread overview]
Message-ID: <b2911093-d8e5-4f51-96ca-be58384906d5@googlegroups.com> (raw)
* Changes in '52', 08-Oct-2016:
- UnZip.Streams: all procedures have an additional (optional)
Ignore_Directory parameter.
- Zip.Compress has the following new methods with improved compression:
LZMA_3, Preselection_1 (replaces Preselection), Preselection_2.
Preselection methods use now entry name extension and size for
improving compression, while remaining 1-pass methods.
For those interested about what's happening "under the hood",
LZMA.Encoding now computes an estimation of the predicted probabilities
of some alternative encodings and chooses the most probable one - it gives
an immediate better local compression. Sometimes the repetition of such a
repeated short-run improvement has a long-run positive effect, but
sometimes not - that's where it's beginning to be fun...
Enjoy!
_________________________
Gautier's Ada programming
http://gautiersblog.blogspot.com/search/label/Ada
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next reply other threads:[~2016-10-08 11:56 UTC|newest]
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2016-10-08 11:56 gautier_niouzes [this message]
2016-10-08 11:59 ` Ann: Zip-Ada v.52 gautier_niouzes
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