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Posted to jira@arrow.apache.org by "Dominik Moritz (Jira)" <ji...@apache.org> on 2022/01/09 02:56:00 UTC
[jira] [Commented] (ARROW-13861) [JS] Create Field with List type will throw error
[ https://issues.apache.org/jira/browse/ARROW-13861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17471274#comment-17471274 ]
Dominik Moritz commented on ARROW-13861:
----------------------------------------
In https://github.com/apache/arrow/pull/10371 you can do
{code:js}
const vector = vectorFromArray([[1, 2], [2, 3]], new List(Field.new({ name: 'field', type: new Uint8 })));
console.log(vector.toArray());
{code}
```
> [JS] Create Field with List type will throw error
> -------------------------------------------------
>
> Key: ARROW-13861
> URL: https://issues.apache.org/jira/browse/ARROW-13861
> Project: Apache Arrow
> Issue Type: Bug
> Components: JavaScript
> Affects Versions: 5.0.0
> Reporter: zizhao.chen
> Priority: Major
> Labels: arrow
>
>
> const field_vector=new ApacheArrow.Field(
> "field_vector",
> new ApacheArrow.List(new ApacheArrow.Float32(), 4),
> false
> );
>
> Will throw error{color:#FF0000} TypeError: Cannot read property 'children' of undefined{color}
> Source code: [https://github.com/apache/arrow/blob/master/js/src/schema.ts#L137]
>
> If it's a bug, i'd like to fix this.
>
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