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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/03/28 16:33:52 UTC

[GitHub] [arrow] wjones127 commented on a change in pull request #12717: ARROW-15975: [C++] Document type traits and inline visitors

wjones127 commented on a change in pull request #12717:
URL: https://github.com/apache/arrow/pull/12717#discussion_r836627330



##########
File path: docs/source/cpp/datatypes.rst
##########
@@ -66,3 +66,138 @@ To instantiate data types, it is recommended to call the provided
    type = arrow::timestamp(arrow::TimeUnit::MICRO);
    // A list type of single-precision floating-point values
    type = arrow::list(arrow::float32());
+
+
+
+Type Traits
+-----------
+
+Writing code that can handle concrete :class:`arrow::DataType` subclasses would 
+be verbose, if it weren't for type traits. They are empty structs with type 

Review comment:
       Thanks! That's helpful




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