wjones127 commented on a change in pull request #12717:
URL: https://github.com/apache/arrow/pull/12717#discussion_r836678392
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File path: docs/source/cpp/datatypes.rst
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@@ -66,3 +66,139 @@ 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. Similar to the type traits provided
+in `std::type_traits <https://en.cppreference.com/w/cpp/header/type_traits>`_,
+Arrow's type traits map the Arrow data types to the specialized array, scalar,
+builder, and other associated types. For example, the Boolean type has traits:
Review comment:
Yeah, good point. I'm thinking I'll move the mention of std::type_traits
to the part where we mention the type predicates, where the comparison seems
more relevant.
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