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DOC: add Dask note to lazy_apply #189

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Mar 27, 2025
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DOC: add Dask note to lazy_apply #189

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7 changes: 6 additions & 1 deletion src/array_api_extra/_lib/_lazy.py
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Expand Up @@ -144,7 +144,12 @@ def lazy_apply( # type: ignore[valid-type] # numpydoc ignore=GL07,SA04

Dask
This allows applying eager functions to Dask arrays.
The Dask graph won't be computed.
The Dask graph won't be computed until the user calls ``compute()`` or
``persist()`` down the line.

The function name will be prominently visible on the user-facing Dask
dashboard and on Prometheus metrics, so it is recommended for it to be
meaningful.

`lazy_apply` doesn't know if `func` reduces along any axes; also, shape
changes are non-trivial in chunked Dask arrays. For these reasons, all inputs
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