tustvold commented on code in PR #4382:
URL: https://github.com/apache/arrow-rs/pull/4382#discussion_r1222913938
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arrow-array/src/array/map_array.rs:
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@@ -19,16 +19,18 @@ use crate::array::{get_offsets, print_long_array};
use crate::{make_array, Array, ArrayRef, ListArray, StringArray, StructArray};
use arrow_buffer::{ArrowNativeType, Buffer, NullBuffer, OffsetBuffer,
ToByteSlice};
use arrow_data::{ArrayData, ArrayDataBuilder};
-use arrow_schema::{ArrowError, DataType, Field};
+use arrow_schema::{ArrowError, DataType, Field, FieldRef};
use std::any::Any;
use std::sync::Arc;
/// An array of key-value maps
///
/// Keys should always be non-null, but values can be null.
///
-/// [MapArray] is physically a [crate::array::ListArray] that has a
-/// [StructArray] with 2 child fields.
+/// [`MapArray`] is physically a [`ListArray`] of key values pairs stored as
an `entries`
+/// [`StructArray`] with 2 child fields.
+///
+/// See [`MapBuilder`](crate::builder::MapBuilder) for how to construct a
[`MapArray`]
Review Comment:
I didn't see a compelling reason to duplicate the example already on
MapBuilder
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