Version 2.8.10

New features

• feat: preserve field order when replacing existing fields in with_field by @DylanModesitt in #3681
• feat: add to_/from_safetensors by @pfackeldey in #3685

Bug-fixes and performance

• fix: update image cell in thinking-in-arrays.ipynb by @ianna in #3660
• fix: prefix with an underscore unused variables by @ianna in #3672
• fix(ci): fix issues with dependencies for GPU tests by @ariostas in #3673
• fix: convert integer-like objects to python integers in shapes by @ikrommyd in #3662
• fix: avoid recursion limit when concatenating EmptyArrays by @ikrommyd in #3664
• fix: only check VirtualNDArray's shape versus count in from_buffers if both are known by @ikrommyd in #3667
• fix: preserve the type when indexed by an empty array by @TaiSakuma in #3678
• fix: ensure masked string/bytestring dtypes can hold 'nan' fill value… by @JamesBrofos in #3692
• fix: add missing units to datetime/timedelta in a test by @TaiSakuma in #3688
• fix: pass attrs parameter to wrap_layout in from_* by @DylanModesitt in #3687
• fix: use jax's __setitem__ syntax in ak.merge_union_of_records to make it work with the jax backend by @ikrommyd in #3596

Other

• chore(deps): bump pypa/cibuildwheel from 3.1 to 3.2 in the actions group by @dependabot[bot] in #3665
• chore(deps): bump the actions group with 2 updates by @dependabot[bot] in #3670
• chore: update pre-commit hooks by @pre-commit-ci[bot] in #3671
• chore: mac os 13 hosted runner image is closing down by @ianna in #3666
• chore: improve pyproject.toml from sp-repo-review checks by @henryiii in #3677
• chore(deps): bump astral-sh/setup-uv from 6 to 7 in the actions group by @dependabot[bot] in #3689
• chore: small inconsistency/typo with the non-jax case below by @ikrommyd in #3698
• chore(deps): bump the actions group with 2 updates by @dependabot[bot] in #3699
• docs: add TaiSakuma as a contributor for code by @allcontributors[bot] in #3679
• docs: add DylanModesitt as a contributor for code by @allcontributors[bot] in #3684
• docs: add JamesBrofos as a contributor for code by @allcontributors[bot] in #3693
• test: add cuda tests for virtual arrays by @ikrommyd in #3459
• test: add a test on flattering empty arrays by @TaiSakuma in #3700

New Contributors

• @DylanModesitt made their first contribution in #3681
• @TaiSakuma made their first contribution in #3678
• @JamesBrofos made their first contribution in #3692

Full Changelog: v2.8.9...v2.8.10

Version 2.8.9

New features

• feat: cuda reducers - add combinations for n>2, argmin and argmax, and fix min. by @ianna in #3645
• feat: add axis=None reducer specializations by @pfackeldey in #3653
• feat: add 'how=' to ak.unzip by @pfackeldey in #3655

Bug-fixes and performance

• fix: virtual array deep copy generator reference + better error message for assert_never by @ikrommyd in #3644
• fix: SVG bug in diagram depicting ragged aggregation by @jpivarski in #3648
• fix: json signedness fixes by @ianna in #3651
• fix: cartoon combinations by @ianna in #3654
• perf: detect & fastpath no-op range slices in all layout types by @pfackeldey in #3642

Other

• chore(deps): bump the actions group with 4 updates by @dependabot[bot] in #3650
• docs: fix touch_data typo by @ikrommyd in #3641
• docs: update CONTRIBUTING guidelines by @ianna in #3656

Full Changelog: v2.8.8...v2.8.9

Version 2.8.8

New features

• feat: adapt __array__ according to numpy guidelines by @ikrommyd in #3592
• feat: ensure ability to pickle ak.Array and ak.Record with VirtualArray buffers by @ikrommyd in #3612
• feat: skip materialization of placeholders in to_packed by @ikrommyd in #3637

Bug-fixes and performance

• fix: catch off-by-one out of bound error by @agoose77 in #3621
• fix: avoid unnecessary recursion if not needed by @pfackeldey in #3611
• fix: VirtualArray's deep copy + accidental .data access by @ikrommyd in #3599
• fix: allow arrays with Nones in single argument usage of ak.where by @ikrommyd in #3563
• fix: properly handle VirtualArray in nplike.asarray by @ikrommyd in #3597
• fix: do not materialize before custom pickling by @ikrommyd in #3633
• fix: do not force LE data-order in form.py by @nileshpatra in #3629
• fix: make to_packed work for typetracer backed IndexedOptionArray, BitMaskedArray, and UnionArray by @ikrommyd in #3608
• perf: add slots to virtual array to reduce instance alloc size by @pfackeldey in #3613
• perf: avoid method chaining for some shape_generators by @pfackeldey in #3615

Other

• chore: update pre-commit hooks by @pre-commit-ci[bot] in #3602
• chore(deps): bump the actions group across 1 directory with 3 updates by @dependabot[bot] in #3624
• chore: remove materialize_if_virtual by @ikrommyd in #3632
• chore(deps): bump actions/attest-build-provenance from 2.4.0 to 3.0.0 in the actions group by @dependabot[bot] in #3635
• chore: update pre-commit hooks by @pre-commit-ci[bot] in #3634
• test: test the virtual array generator before calling .shape in copy test by @ikrommyd in #3631
• refactor: VirtualArrays by @pfackeldey in #3620
• docs: add nileshpatra as a contributor for code by @allcontributors[bot] in #3638
• ci: move job to deploy doc preview to a separte workflow by @ariostas in #3627
• ci: doc previews for PRs from forks by @ariostas in #3625

New Contributors

• @nileshpatra made their first contribution in #3629

Full Changelog: v2.8.7...v2.8.8

Version 2.8.7

New features

(none!)

Bug-fixes and performance

(none!)

Other

• refactor: add jax DeprecationWarning by @ianna in #3609

Full Changelog: v2.8.6...v2.8.7

Version 2.8.6

New features

(none!)

Bug-fixes and performance

• fix: first maybe materialize, then check for PlaceholderArray by @pfackeldey in #3566
• fix: ak.any and ak.combinations with cuda backend kernels by @ianna in #3561
• fix: length0 array repr by @pfackeldey in #3564
• fix: to_buffers for duplicate fields in records by @pfackeldey in #3567
• fix: overflow error when concatenating more than 128 regular arrays by @ikrommyd in #3568
• fix: patch emscripten RPath by @henryiii in #3575
• fix: removal of pyarrow.lib.PyExtensionType in pyarrow 21 by @ikrommyd in #3581
• fix: filter also for new (v0.7.0) LinearizeTracer type by @pfackeldey in #3586
• refactor: define common nplike method to get pointer to memory by @pfackeldey in #3565

Other

• chore: update CITATION.cff by @ianna in #3571
• chore(ci): bump minimal pyarrow version being tested by @ariostas in #3584
• chore(deps): bump pypa/cibuildwheel from 3.0 to 3.1 in the actions group by @dependabot[bot] in #3591
• chore: update zenodo citation in README by @ikrommyd in #3574
• chore: fix pyodide link in README by @ikrommyd in #3576
• chore: update pre-commit hooks by @pre-commit-ci[bot] in #3569
• docs: add missing funding badges by @ariostas in #3588

Full Changelog: v2.8.5...v2.8.6

Version 2.8.5

New features

(none!)

Bug-fixes and performance

• fix: cudf strings column by @ianna in #3555
• fix: ak.categories should return None if no categories are present by @pfackeldey in #3553
• fix: combinations explicit cuda test for n == 0 by @ianna in #3554
• fix: cuda atomicMin and atomicMax for <double>s by @Moelf in #3545
• fix: error if a complex JAX arrays type is passed to Awkward's C++ kernels by @pfackeldey in #3546
• fix: too many dashes in jupyter repr by @pfackeldey in #3552
• fix: use older manylinux for CPython 3.10 and 3.9 by @henryiii in #3558
• fix: use std::memcpy instead of *reinterpret_cast by @APN-Pucky in #3514

Other

• chore(deps): bump the actions group across 1 directory with 2 updates by @dependabot in #3549
• chore: use PEP 639 license by @henryiii in #3559
• ci: add workflow to run GPU tests on selfhosted runner by @ariostas in #3543
• ci: run cuda kernel tests by @ariostas in #3551
• docs: Add MODE talk + update publications by @Saransh-cpp in #3547
• docs: add APN-Pucky as a contributor for code by @allcontributors in #3557
• docs: add Moelf as a contributor for code by @allcontributors in #3556

Full Changelog: v2.8.4...v2.8.5

Version 2.8.4

New features

(none!)

Bug-fixes and performance

• fix: simplify unmasked array by @ianna in #3518
• fix: numpy 2.3 compatibility by @ikrommyd in #3534
• fix: improve type consistency in to_packed for num_none by @ianna in #3538
• fix: make awkward compatible with numexpr 2.11 by @ikrommyd in #3533
• fix: do not use atol=np.inf in a jax test and xfail sorting test which fails by @ikrommyd in #3542

Other

• chore: update pre-commit hooks by @pre-commit-ci in #3523
• chore: update pre-commit hooks by @ianna in #3524
• chore: update pre-commit hooks by @pre-commit-ci in #3515
• chore: restrict numpy and numexpr for now by @ianna in #3539
• ci: change pre-commit autoupdate to a monthly schedule by @ariostas in #3516
• ci: fix Windows 3.13 by @henryiii in #3536
• revert: "fix: numpy 2.3 compatibility" by @ianna in #3537
• test: fix test names by @Saransh-cpp in #3532

Full Changelog: v2.8.3...v2.8.4

Version 2.8.3

New features

• feat: add a ref to the original 'unclipped' buffer generator by @pfackeldey in #3497
• feat: improve assertion error message in kernels by @pfackeldey in #3498
• feat: do not allow records, primitives, or bare strings in ak.materialize (+ docs display fix) by @ikrommyd in #3501

Bug-fixes and performance

• fix: more meaningful assertion error in length calculation in case of column optimization problems in dask-awkward by @ikrommyd in #3499
• fix: use cmath instead of bit mask for infinite doubles by @APN-Pucky in #3505
• fix: runtime for ak.combinations with cuda backend by @ianna in #3502
• fix: pass backend to RecordArray by @ianna in #3507
• fix: pass backend to EmptyArray by @ikrommyd in #3508
• fix: Python 3.13 classifier to awkward-cpp by @APN-Pucky in #3510

Other

• docs: fix a small typo in IndexedArray docstring by @ikrommyd in #3496
• chore: update pre-commit hooks by @pre-commit-ci in #3500
• chore: update pre-commit hooks by @pre-commit-ci in #3506

New Contributors

• @APN-Pucky made their first contribution in #3505

Full Changelog: v2.8.2...v2.8.3

Version 2.8.2

New features

• feat: add segmented argmin and argmax by @ianna in #3449
• feat: change argmin and argmax algorithms to handle big data by @ianna in #3450
• feat: implement segment count_nonzero reducer by @ianna in #3452
• feat: support unknown_length for virtual arrays in order to read without any materialization by @ikrommyd in #3475
• feat: enable jax backend for virtual arrays by @ikrommyd in #3451
• feat: Add a parquet uuid calculation by @NJManganelli in #3440

Bug-fixes and performance

• fix: typo in UnionArray combinations by @ikrommyd in #3438
• fix: pyarrow 19.0 support by @ianna in #3416
• fix: force gc in numba test by @ianna in #3448
• fix: highlevel function dispatch type hint by @pfackeldey in #3447
• fix: remove mixed numpy<->jax arrays in Jax backend by @pfackeldey in #3446
• fix: better support for pyright by @henryiii in #3453
• fix: setitem in ak firsts with jax backend by @pfackeldey in #3455
• fix: replace some __setitem__ calls with .at[where].set(value) for the jax backend by @ikrommyd in #3457
• fix: remove duplicate failing raggedtensor test when you have a GPU on the system by @ikrommyd in #3461
• fix: single int slicing for named axis by @pfackeldey in #3469
• fix: add ptr implementation and fix __setitem__ for Index and tocarryraw to make ak.(arg)combinations work for the jax backend by @ikrommyd in #3471
• fix: check for error being None in the output of validity kernels by @ikrommyd in #3479
• fix: minor things required for the whole ci to work with virtual arrays by @ikrommyd in #3484
• fix: jax reducers returning incorrect output values or lengths by @ikrommyd in #3464
• fix: avoid calling shape_generator inside generator if it has already been called by @ikrommyd in #3490
• fix: add field metadata to record its option type by @ianna in #3478
• fix: add maps_as_pydicts parameter to to_pylist by @ianna in #3492
• fix: consistent materializing length across all layouts by @ikrommyd in #3489

Other

• refactor: move form_with_unique_keys here by @pfackeldey in #3482
• revert: "fix: setitem in ak firsts with jax backend" by @ianna in #3460
• docs: minor fixes to JAX guide + add VJP example by @Saransh-cpp in #3439
• docs: add ikrommyd as a contributor for test by @allcontributors in #3472
• docs: add NJManganelli as a contributor for code by @allcontributors in #3481
• chore: update pre-commit hooks by @pre-commit-ci in #3436
• chore: update pre-commit hooks by @pre-commit-ci in #3443
• chore: update pre-commit hooks by @pre-commit-ci in #3445
• chore: update pre-commit hooks by @pre-commit-ci in #3470
• chore: use ubuntu-latest for coverage by @ianna in #3473
• chore: update pre-commit hooks by @pre-commit-ci in #3476
• chore: update pre-commit hooks by @pre-commit-ci in #3486
• chore: update pyarrow version in the full testing requirements by @ianna in #3487
• chore: remove the upper pin on pyarrow by @ianna in #3493
• chore(deps): bump scientific-python/upload-nightly-action from 0.6.1 to 0.6.2 in the actions group by @dependabot in #3442
• chore(deps): bump the actions group with 2 updates by @dependabot in #3485

New Contributors

• @NJManganelli made their first contribution in #3440

Full Changelog: v2.8.1...v2.8.2

Version 2.8.1

New features

• feat: add tobytes to VirtualArray by @ikrommyd in #3434

Bug-fixes and performance

(none!)

Other

(none!)

Full Changelog: v2.8.0...v2.8.1