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@kfastov kfastov commented Sep 12, 2022

Which issue does this PR close?

Closes #2704.

Rationale for this change

Already described in the issue

What changes are included in this PR?

is_nested function is added to DataType, that returns true if the provided type is nested (List, FixedSizeList, LargeList, Struct, Union or Map)

Are there any user-facing changes?

User will be able to use DataType::is_nested function

@github-actions github-actions bot added the arrow Changes to the arrow crate label Sep 12, 2022
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@alamb alamb left a comment

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I wonder if some unit test would be helpful ? So that we don't forget it is in the API

Though the test would basically just be a re-implementation so I agree adding it is debatable.

Thanks for this @kfastov -- really nice

Co-authored-by: Liang-Chi Hsieh <viirya@gmail.com>
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kfastov commented Sep 12, 2022

@alamb
Yes, in this case, I can't think of a test that will break if API changes.
Thanks for approving, I've added the List type to the documentation comment

@alamb alamb merged commit 0ba5c5b into apache:master Sep 12, 2022
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alamb commented Sep 12, 2022

Thanks again @kfastov for the fast turnaround 🐎

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ursabot commented Sep 12, 2022

Benchmark runs are scheduled for baseline = be33fb3 and contender = 0ba5c5b. 0ba5c5b is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

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Add DataType function to detect nested types

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