feat(zarr-indexing): LazyArray — generic lazy indexing over array-API arrays - #4222

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d-v-b wants to merge 27 commits into

zarr-developers:mainfrom

d-v-b:feat/lazy-array-wrapper

Commits on Jul 31, 2026

feat(zarr-indexing): LazyArray — generic lazy indexing over array-API arrays
d-v-b
committed
feat(zarr-indexing): negative-step slices, per merged ndsel 1.0-draft.2
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committed
polish(zarr-indexing): re-review minors — step-zero ValueError, kw-only Partition, strides docs
d-v-b
committed
docs(zarr-indexing): plain technical language throughout
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docs(zarr-indexing): American spelling (flavour -> flavor)
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committed
ci(zarr-indexing): scoped lint ignores for the deliberate blind excepts
d-v-b
committed
ci(zarr-indexing): pin ruff in the lint job and justfile
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docs: add lazy-indexing examples for NumPy and Dask
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docs: compare dask task graphs with fused transforms in the dask example
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test: run examples against this repository's local packages
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committed
feat(zarr-indexing): negotiate what indexing a source supports
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committed
fix(zarr-indexing): token the data, not how it is read
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committed
fix(zarr-indexing): an empty downward walk selects nothing
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committed
fix(zarr-indexing): a selection of slices is not a fancy selection
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committed
fix(zarr-indexing): count a domain axis no output map depends on
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committed
fix(zarr-indexing): a materialized view never hands back the source
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docs(zarr-indexing): correct claims a reviewer found false
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fix(zarr-indexing): hold the full-rank invariant inside the engine
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fix(zarr-indexing): an index array spans the domain it is read over
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test(zarr-indexing): a state machine for chained indexing, and the rank-0 part it found
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fix(zarr-indexing): the defects an adversarial review found at the boundaries
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test(zarr-indexing): generate the selections that were never generated
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refactor(zarr-indexing)!: settle the API decisions that get dearer after 1.0
d-v-b
committed

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feat(zarr-indexing): LazyArray — generic lazy indexing over array-API arrays - #4222

feat(zarr-indexing): LazyArray — generic lazy indexing over array-API arrays#4222
d-v-b wants to merge 27 commits into
zarr-developers:mainfrom
d-v-b:feat/lazy-array-wrapper

Commits on Jul 31, 2026

feat(zarr-indexing): LazyArray — generic lazy indexing over array-API arrays

feat(zarr-indexing): negative-step slices, per merged ndsel 1.0-draft.2

polish(zarr-indexing): re-review minors — step-zero ValueError, kw-only Partition, strides docs

docs(zarr-indexing): plain technical language throughout

docs(zarr-indexing): American spelling (flavour -> flavor)

ci(zarr-indexing): scoped lint ignores for the deliberate blind excepts

ci(zarr-indexing): pin ruff in the lint job and justfile

docs: add lazy-indexing examples for NumPy and Dask

docs: compare dask task graphs with fused transforms in the dask example

test: run examples against this repository's local packages

feat(zarr-indexing): negotiate what indexing a source supports

fix(zarr-indexing): token the data, not how it is read

fix(zarr-indexing): an empty downward walk selects nothing

fix(zarr-indexing): a selection of slices is not a fancy selection

fix(zarr-indexing): count a domain axis no output map depends on

fix(zarr-indexing): a materialized view never hands back the source

docs(zarr-indexing): correct claims a reviewer found false

fix(zarr-indexing): hold the full-rank invariant inside the engine

fix(zarr-indexing): an index array spans the domain it is read over

test(zarr-indexing): a state machine for chained indexing, and the rank-0 part it found

fix(zarr-indexing): the defects an adversarial review found at the boundaries

test(zarr-indexing): generate the selections that were never generated

refactor(zarr-indexing)!: settle the API decisions that get dearer after 1.0

Commits on Aug 1, 2026

docs(zarr-indexing): correct the claims a reviewer could check, and two dialect gaps

fix(zarr-indexing): collapse an empty index array instead of extending the format

fix(indexing): address lazy array review findings

fix(zarr-indexing): keep an empty masked result masked whichever parts are in force