[jira] [Commented] (ARROW-15813) [R]strptime should support partial format

["Dragoș Moldovan-Grünfeld (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-15813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17509960#comment-17509960 ] 

Dragoș Moldovan-Grünfeld commented on ARROW-15813:
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This could be implemented only in R once {{strptime}} can return a {{NULL}} so we can {{coalesce}} through several formats. 

> [R]strptime should support partial format
> -----------------------------------------
>
>                 Key: ARROW-15813
>                 URL: https://issues.apache.org/jira/browse/ARROW-15813
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Dragoș Moldovan-Grünfeld
>            Priority: Major
>
> In base R we can return just the parts from a date time by passing a restricted format.
> {code:r}
> > strptime("2012-05-25 18:45:32", format = "%Y-%m-%d")
> [1] "2012-05-25 BST"
> > strptime("2012-05-25 18:45:32", format = "%Y-%m-%d %H")
> [1] "2012-05-25 18:00:00 BST
> {code}



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