[ https://issues.apache.org/jira/browse/ARROW-15455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jabari Booker reassigned ARROW-15455: ------------------------------------- Assignee: Jabari Booker > [C++] Cast between fixed size list type and variable size list > --------------------------------------------------------------- > > Key: ARROW-15455 > URL: https://issues.apache.org/jira/browse/ARROW-15455 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: Joris Van den Bossche > Assignee: Jabari Booker > Priority: Major > Labels: good-second-issue, kernel, pull-request-available > Time Spent: 0.5h > Remaining Estimate: 0h > > Casting from fixed size list to variable size list could be possible, I > think, but currently doesn't work: > {code:python} > >>> fixed_size = pa.array([[1, 2], [3, 4]], type=pa.list_(pa.int64(), 2)) > >>> fixed_size.cast(pa.list_(pa.int64())) > ... > ArrowNotImplementedError: Unsupported cast from fixed_size_list<item: > int64>[2] to list using function cast_list > {code} > And in principle, a cast the other way around could also be possible if it is > checked that each list has the correct length. -- This message was sent by Atlassian Jira (v8.20.10#820010)