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Commits on Jan 19, 2023

• Changed copyright header comment format, updated copyright year.

  nayuki

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Commits on Aug 8, 2022

• Simplified some Python code.

  nayuki

  committed
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• Clarified some inequalities in PpmModel.

  nayuki

  committed
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Commits on Apr 14, 2020

• Simplified I/O code by removing Python 2 support.

  nayuki

  committed
  2b03459

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• Removed explicit object superclass (unnecessary in Python 3).

  nayuki

  committed
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Commits on Sep 16, 2018

• Refactored {PpmModel,PpmCompress,PpmDecompress} to interally store history symbols in reverse order, without changing file format, in all languages.

  nayuki

  committed
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• Corrected CheckedFrequencyTable.toString() in Java and Python, for display purposes only.

  nayuki

  committed
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• Refactored some bit arithmetic logic in ArithmeticCoderBase.update() to slightly streamline computations, in all languages.

  nayuki

  committed
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• Reformatted some code in ArithmeticCoderBase.update() to highlight similarity, in all languages.

  nayuki

  committed
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• Updated comments within method ArithmeticCoderBase.update(), in all languages.

  nayuki

  committed
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• Simplified a line of code in ArithmeticCodeBase constructor in all languages (related to commit 1dfa7a1cf29f).

  nayuki

  committed
  e92f082

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• Updated method-level comments for ArithmeticCoderBase.update(), slightly differently in each language version.

  nayuki

  committed
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• Added some comments to ArithmeticCoderBase, in all languages.

  nayuki

  committed
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• Renamed Arithmetic{CoderBase,Decoder,Encoder} constructor parameters, in all languages.

  nayuki

  committed
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• Renamed three fields in class ArithmeticCoderBase (including mentions in comments), in all languages.

  nayuki

  committed
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• Renamed two fields in class ArithmeticCoderBase, in all languages.

  nayuki

  committed
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• Renamed field ArithmeticCoderBase.MAX_RANGE to fullRange/full_range (including mentions in comments), in all languages.

  nayuki

  committed
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• Renamed field ArithmeticCoderBase.STATE_SIZE to numStateBits/num_state_bits (including mentions in comments), in all languages.

  nayuki

  committed
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Commits on Sep 10, 2018

• Rearranged the order of some fields in class ArithmeticCoderBase, in all languages.

  nayuki

  committed
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Commits on Jun 28, 2018

• Updated Python ArithmeticCoderBase constructor to take statesize as parameter instead of hard-coding, updated subclasses to pass the parameter, updated application classes to use the old hard-coded…

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  nayuki

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• arithmeticcoding.py: Updated comments for ArithmeticCoderBase's configuration fields (similar to commit 1c9919ebb082).

  nayuki

  committed
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• arithmeticcoding.py: Converted ArithmeticCoderBase static variables into instance variables.

  nayuki

  committed
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Commits on Jun 26, 2018

• PpmCompress, PpmDecompressed: Added and updated comments in all languages.

  nayuki

  committed
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• ppmmodel.py: Simplified a for-loop to use for-each instead of indexing.

  nayuki

  committed
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• PpmModel: Simplified a bit of code in all languages.

  nayuki

  committed
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• PpmModel, PpmCompress, PpmDecompressed: Simplified a bit of code in all languages.

  nayuki

  committed
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Commits on Jun 25, 2018

• arithmeticcoding.py: Slightly simplified code to use underscore as unused for-each loop variable (loosely related to commit 6aacd0156bb1).

  nayuki

  committed
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• Ppm{Compress,Decompress}.java, ppm-{compress,decompress}.py: Simplified try-finally code (related to commits a1a23848552f, 89171531fb9e).

  nayuki

  committed
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Commits on Jun 12, 2018

• Tweaked Python code for clarity - moved a function, rewrote a small snippet.

  nayuki

  committed
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• Simplified Python code for unpacking command line arguments.

  nayuki

  committed
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• Tweaked Python main demo programs to use multi-variable with-statement.

  nayuki

  committed
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• Fixed indentation of blank line.

  nayuki

  committed
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Commits on Oct 4, 2016

• ppm-compress, ppm-decompress, ppmmodel: Added full Python translation of PPM-related Java classes/applications.

  nayuki

  committed
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• Various applications: Added comment for the compression/decompression code block in each main function.

  nayuki

  committed
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• ArithmeticCodingTest.java, adaptive-arithmetic-{compress,decompress}.py: Converted newlines from CR+LF to just LF.

  nayuki

  committed
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