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https://issues.apache.org/jira/browse/ARROW-4600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rok Mihevc updated ARROW-4600:
------------------------------
External issue URL: https://github.com/apache/arrow/issues/15980
> [Ruby] Arrow::DictionaryArray#[] should returns the item in the indices array
> -----------------------------------------------------------------------------
>
> Key: ARROW-4600
> URL: https://issues.apache.org/jira/browse/ARROW-4600
> Project: Apache Arrow
> Issue Type: Bug
> Components: Ruby
> Reporter: Kenta Murata
> Assignee: Kouhei Sutou
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Arrow::DictionaryArray#[] should returns the item in the indices array.
> However, the current behavior is error like below:
> {{Traceback (most recent call last):}}
> {{ 5: from test.rb:4:in `<main>'}}
> {{ 4: from test.rb:4:in `new'}}
> {{ 3: from
> /Users/mrkn/src/github.com/apache/arrow/ruby/red-arrow/lib/arrow/dictionary-data-type.rb:103:in
> `initialize'}}
> {{ 2: from
> /Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:328:in
> `block in load_constructor_infos'}}
> {{ 1: from
> /Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:317:in
> `block (2 levels) in load_constructor_infos'}}
>
> {{/Users/mrkn/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/gobject-introspection-3.3.1/lib/gobject-introspection/loader.rb:317:in
> `invoke': *invalid argument Array (expect #<Class:0x00007ff1ad9179a8>)
> (+ArgumentError+)*}}
> test.rb is given below:
> {{require 'arrow'}}
> {{ary = Arrow::DictionaryArray.new(}}
> {{ Arrow::DictionaryDataType.new(:int8, %w[foo bar baz], true),}}
> {{ Arrow::Int8Array.new([0, 1, 0, 1, 2, 1, 2, 0])}}
> {{)}}
> {{ary[0]}}
>
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