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https://issues.apache.org/jira/browse/ARROW-9431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17351905#comment-17351905
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Niranda Perera edited comment on ARROW-9431 at 5/26/21, 4:11 PM:
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[~apitrou] my idea was something like this.
{code:java}
def replace_by_index(to_replace: Array, arr1: Array, arr2: Array) -> Array:
out = arr1 # copy array
for i in to_replace:
out[i] = arr2[i]
return out {code}
Its like an if-else mask, but the mask's set bits are encoded in an array
ARROW-10640
was (Author: niranda):
[~apitrou] my idea was something like this.
{code:java}
def replace_by_index(to_replace: Array, arr1: Array, arr2: Array) -> Array:
out = arr1 # copy array
for i in to_replace:
out[i] = arr2[i]
return out {code}
> [C++/Python] Kernel for SetItem(IntegerArray, values)
> -----------------------------------------------------
>
> Key: ARROW-9431
> URL: https://issues.apache.org/jira/browse/ARROW-9431
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++, Python
> Affects Versions: 2.0.0
> Reporter: Uwe Korn
> Priority: Major
>
> We should have a kernel that allows overriding the values of an array using
> an integer array as the indexer and a scalar or array of equal length as the
> values.
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