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Blosc2 v4.1.0

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@lshaw8317 lshaw8317 released this 28 Feb 07:13
· 117 commits to main since this release
v4.1.0
c275744
  • Add DSL kernel functionality for faster, compiled, user-defined functions which broadly respect python syntax and implement the LazyArray interface. See the introductory tutorial at: https://blosc.org/python-blosc2/getting_started/tutorials/03.lazyarray-udf-kernels.html
  • Add read-only mmap support for store containers:
    DictStore, TreeStore, and EmbedStore now accept mmap_mode="r"
    when opened with mode="r" (including via blosc2.open for .b2d,
    .b2z, and .b2e).
  • New .meta entry for store containers, allowing better store recognition at blosc2.open() time. Fixes #546.
  • Add cumulative_sum and cumulative_prod functions for Array API compliance.
  • Add Unicode string arrays, support comparison operations with them, and optimised compression path.
  • Add endswith and startswith and extend contains to support strings and offer miniexpr multithreaded computation when possible.
  • Use DSL kernels to accelerate arange/linspace constructors by 6-10x.
  • Improve documentation for filters and filters_meta.
  • Fix edge case issues with resize and constructors so that chunks may be set independently of shape, and arrays may be extended from empty consistently.
  • Continued work on miniexpr integration, interface, and support.
  • Ruff fixes and implementation of PEP recommendations.
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