Version 2.4.0

New features

• feat: Form.expected_from_buffers for names/dtypes ak.from_buffers needs. by @jpivarski in #2660
• feat: support out-of-band buffers in pickling by @agoose77 in #2665
• feat: add touch_data to ak.typetracer by @agoose77 in #2672
• feat: add support for custom picklers by @agoose77 in #2682
• feat!: deprecate forget_length, add parameters to typetracer_with_report by @agoose77 in #2671
• feat!: remove deprecations for 1.4.0 release by @agoose77 in #2688* fix: support placeholders in shape-only routines by @agoose77 in #2652

Bug-fixes and performance

• fix: multiple-output ufuncs e.g. divmod by @agoose77 in #2654
• fix: support unflattening a typetracer-backed array at axis != 0 by @agoose77 in #2657
• fix: fix IPython inspection by @agoose77 in #2658
• fix: using numba.core.errors.Numba<Error> instead of Error in a Numba typing context. by @jpivarski in #2659
• fix: raise error for invalid object in from_dlpack by @agoose77 in #2662
• fix: fix/harden broadcasting through tuples by @agoose77 in #2663
• fix: update string to search for in determing parquet column list separator by @douglasdavis in #2670
• fix: guard broadcast_and_apply from mixed backends by @agoose77 in #2678
• fix: support typetracer in ak.str. operations by @agoose77 in #2679

Other

• chore: update pre-commit hooks by @pre-commit-ci in #2645
• chore: update pre-commit hooks by @pre-commit-ci in #2677
• chore: bump numba and pyarrow test pins by @agoose77 in #2684
• chore: bump C++ standard version by @agoose77 in #2685
• chore(deps): bump aws-actions/configure-aws-credentials from 2 to 3 by @dependabot in #2669
• test: keep testing Windows 32-bit. by @jpivarski in #2681

Full Changelog: v2.3.3...v2.4.0

Version 2.3.3

New features

• feat: add support for __arrow_array__ by @agoose77 in #2650
• feat: add __dlpack__, from_dlpack support by @agoose77 in #2649

Bug-fixes and performance

• fix: rename cppyy test by @ianna in #2643
• fix: support highlevel=False in all branches for from_parquet by @agoose77 in #2646
• fix: support non-hashable values in parameters_union by @agoose77 in #2651
• fix: remove unneeded cast by @agoose77 in #2653

Other

• chore(deps): bump pypa/gh-action-pypi-publish from 1.8.9 to 1.8.10 by @dependabot in #2641

Full Changelog: v2.3.2...v2.3.3

Version 2.3.2

New features

• feat: add support for expected termination of transform functions by @agoose77 in #2595
• feat: export error classes by @agoose77 in #2613
• feat: unpickle arrays made in Awkward v1 (as v2). by @jpivarski in #2604
• feat: use pyarrow for string functions by @jpivarski in #2616
• feat: add support for dictionary encoding from Arrow by @agoose77 in #2630
• feat: add CPU kernel for to_numpy support for strings/bytestrings by @agoose77 in #2631

Bug-fixes and performance

• fix: don't decorate non-Exception subclasses by @agoose77 in #2587
• fix: use to_backend_array() instead of asarray by @agoose77 in #2592
• fix: artefacts → artifacts in pyproject.toml by @agoose77 in #2612
• fix: adjust for numexpr 2.8.5, which hid getContext's frame_depth argument by @jpivarski in #2617
• fix: add inline to prevent multiple definitions by @ManasviGoyal in #2606
• fix: support lists of strings in ak.zip with optiontype_outside_record=True by @agoose77 in #2623
• fix: support counts=len(array) in ak.unflatten by @agoose77 in #2632
• fix: support non int64 index in ListArray's pad_none by @agoose77 in #2634
• fix: assert nextlen == 0 in reducer should also allow unknown_length by @jpivarski in #2610

Other

• refactor: add new module and name arguments to high_level_function decorator by @agoose77 in #2620
• docs: add guide on unflattening and grouping by @agoose77 in #2622
• docs: remove reference to old arrayclass by @agoose77 in #2640
• docs: initial user-guide pass for string functions by @agoose77 in #2635
• chore(deps): bump pypa/cibuildwheel from 2.13.1 to 2.14.1 by @dependabot in #2584
• chore(deps): bump pypa/gh-action-pypi-publish from 1.8.7 to 1.8.8 by @dependabot in #2580
• chore: update pre-commit hooks by @pre-commit-ci in #2565
• chore: update pre-commit hooks by @pre-commit-ci in #2585
• chore: update pre-commit hooks by @pre-commit-ci in #2619
• chore: use 2x faster black mirror by @henryiii in #2633
• chore: drop 3.7 classifier by @agoose77 in #2636
• chore(deps): bump pypa/gh-action-pypi-publish from 1.8.8 to 1.8.9 by @dependabot in #2639
• chore(deps): bump pypa/cibuildwheel from 2.14.1 to 2.15.0 by @dependabot in #2629

Full Changelog: v2.3.1...v2.3.2

Version 1.10.4

What's Changed

• fix: backport vendored mixin from #2534 by @agoose77 in #2583
• fix: (v1) merging options should produce an option by @agoose77 in #2582

Full Changelog: v1.10.3...v1.10.4

Version 2.3.1

New features

(none!)

Bug-fixes and performance

• fix: added kernel specializations for awkward_ListOffsetArray_reduce_local_nextparents_64 by @jpivarski in #2572

Other

(none!)

Full Changelog: v2.3.0...v2.3.1

Version 2.3.0

New features

• feat: LayoutBuilder in Numba by @ianna in #2408
• feat: move string features into core by @agoose77 in #2547
• feat: add new __list__ parameter for list-based array types by @agoose77 in #2549
• feat!: deprecate string behavior classes by @agoose77 in #2528
• feat!: apply retroactive deprecations by @agoose77 in #2566

Bug fixes and performance

• fix: support dict-likes in form.from_dict, convert fields to list by @agoose77 in #2548
• fix: check validity error properly by @agoose77 in #2550
• fix: string broadcasting by @agoose77 in #2552
• fix: make C++ LayoutBuilder API consistent with the Numba's by @ianna in #2553
• fix: convert unknown-length to index in ListOffsetArray.to_RegularArray by @agoose77 in #2560
• fix: prefer known to unknown lengths in broadcasting by @agoose77 in #2561
• fix: broadcasting of regular strings by @agoose77 in #2564
• fix: restore NEP-18 overloads for concatenate and where by @agoose77 in #2567

Other

• chore: update pre-commit hooks by @pre-commit-ci in #2532
• chore: update pyodide parts a bit by @henryiii in #2538
• chore: move C++ format configuration by @agoose77 in #2554
• chore: drop Python 3.7 by @agoose77 in #2557
• chore: ruff moved to astral-sh by @henryiii in #2562
• chore: target-version no longer needed by Black or Ruff by @henryiii in #2563
• chore(deps): bump pypa/gh-action-pypi-publish from 1.8.6 to 1.8.7 by @dependabot in #2546
• ci: cap pydantic<2 to fix WASM build by @agoose77 in #2558
• refactor: drop unused if by @agoose77 in #2543

Full Changelog: v2.2.4...v2.3.0

v2.2.4

New features

• feat!: canonicalise union of indexed by @agoose77 in #2527
• feat: add array dispatcher (inline) by @agoose77 in #2531

Bug fixes and performance

• fix: patch NDArrayOperatorsMixin by @agoose77 in #2534
• fix: improve performance of Form.select_columns by @agoose77 in #2536

Other

• refactor: add internal with_operation_context by @agoose77 in #2525
• chore: update pre-commit hooks by @pre-commit-ci in #2522
• chore(deps): bump pypa/cibuildwheel from 2.13.0 to 2.13.1 by @dependabot in #2521

Full Changelog: v2.2.3...v2.2.4

Version 2.2.3

New features

• feat!: deprecate to_NumpyForm's ``dtype` argument by @agoose77 in #2503
• feat!: deprecate the time __unit__ parameter by @agoose77 in #2518

Bug fixes and performance

• fix: don't project records during broadcasting; push index down by @agoose77 in #2524
• fix: protect ak.to_parquet against memory explosion when args are swapped. by @jpivarski in #2523
• fix: str of KeyError for <3.11 by @agoose77 in #2519
• fix: support axis != -1 for record reduction by @agoose77 in #2514

Other

• refactor: dead c++ elimination by @agoose77 in #2504
• refactor: move responsibility for positional reducers to Reducer.apply by @agoose77 in #2507

Full Changelog: v2.2.2...v2.2.3

Version 2.2.2

New features

• feat!: drop string broadcasting overloading by @agoose77 in #2474
• feat: add Index._touch_XXX methods by @agoose77 in #2478
• feat: add ak.typetracer.length_one_if_typetracer by @jpivarski in #2499
• feat: add placeholder array by @agoose77 in #2479

Bug-fixes and performance

• fix!: raise error when flattening strings by @agoose77 in #2471
• fix: ak.concatenate for typetracer by @agoose77 in #2497
• fix: always touch arguments to kernels by @agoose77 in #2472
• fix: check start_at_zero in _compact_offsets by @agoose77 in #2477
• fix: convert index to shape item by @agoose77 in #2466
• fix: formatting error message (missing space). by @jpivarski in #2485
• fix: rename tonumbatype function to conform by @ianna in #2482
• fix: request non-option results for overloaded positional record reducers by @agoose77 in #2502
• fix: starts handling in RegularArray._reduce_next by @agoose77 in #2492
• fix: touch offsets in kernel call by @agoose77 in #2469
• fix: trim content when broadcasting by @agoose77 in #2489
• fix: use offsets for starts to handle length-0 arrays by @agoose77 in #2488
• refactor: cleanup and type hints by @agoose77 in #2476
• refactor: improve kernel error handling logic (1 of 3) by @agoose77 in #2505
• refactor: move JAX reducer dispatch to ak._do.reduce (2 of 3) by @agoose77 in #2506
• refactor: simplify reducer boilerplate (3 of 3) by @agoose77 in #2509

Other

• chore(deps): bump docker/setup-qemu-action from 2.1.0 to 2.2.0 by @dependabot in #2511
• chore(deps): bump pypa/cibuildwheel from 2.12.3 to 2.13.0 by @dependabot in #2481
• chore: add more type hints! by @agoose77 in #2473
• chore: update pre-commit hooks by @pre-commit-ci in #2467
• chore: update pre-commit hooks by @pre-commit-ci in #2500
• chore: upgrade CI micromamba action by @agoose77 in #2494

Full Changelog: v2.2.1...v2.2.2

Version 2.2.1

New features

• feat: add validity error for duplicate record field by @agoose77 in #2447
• feat: add empty_if_typetracer & expose more of typetracer to L2 by @agoose77 in #2127
• feat!: remove use of typestr in ak.types.Type by @agoose77 in #2454
• feat: improve performance of behavior lookups by @agoose77 in #2464
• feat: support record reducer overloads by @agoose77 in #2458

Bug-fixes and performance

• fix: ak.to_numpy does not properly convert lists of empty string by @agoose77 in #2449
• fix: handle indexed nodes in ak.almost_equal by @agoose77 in #2460

Other

• ci: annotate pytest failures on GHA by @agoose77 in #2448
• chore: update pre-commit hooks by @pre-commit-ci in #2461
• docs: update contributing guide by @agoose77 in #2453
• refactor: reorganise sentinel definitions by @agoose77 in #2459

Full Changelog: v2.2.0...v2.2.1