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https://issues.apache.org/jira/browse/ARROW-13119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ian Cook resolved ARROW-13119.
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Resolution: Fixed
Resolved by https://github.com/apache/arrow/pull/10563
> [R] Set empty schema in scalar Expressions
> ------------------------------------------
>
> Key: ARROW-13119
> URL: https://issues.apache.org/jira/browse/ARROW-13119
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Ian Cook
> Assignee: Ian Cook
> Priority: Major
> Fix For: 5.0.0
>
>
> Closely related to ARROW-13117 is the problem of {{type()}} and {{type_id()}}
> not working for scalar expressions. For example, currently this happens:
> {code:r}> Expression$scalar("foo")$type()
> Error: !is.null(schema) is not TRUE
> > Expression$scalar(42L)$type()
> Error: !is.null(schema) is not TRUE{code}
> This is what we want to happen:
> {code:r}> Expression$scalar("foo")$type()
> Utf8
> string
> > Expression$scalar(42L)$type()
> Int32
> int32{code}
> This is simple to solve; we just need to set {{schema}} to an empty schema
> for all scalar expressions.
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