[GitHub] [arrow-rs] alippai commented on a change in pull request #414: Doctests for DecimalArray.
alippai commented on a change in pull request #414:
URL: https://github.com/apache/arrow-rs/pull/414#discussion_r650495530
##
File path: arrow/src/array/array_binary.rs
##
@@ -613,6 +613,32 @@ impl Array for FixedSizeBinaryArray {
}
/// A type of `DecimalArray` whose elements are binaries.
+///
+/// # Examples
+///
+/// ```
+///use arrow::array::{ArrayData, Array, DecimalArray};
+///use arrow::buffer::Buffer;
+///use arrow::datatypes::DataType;
+///// let val_8887: [u8; 16] = [192, 219, 180, 17, 2, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0];
+///// let val_neg_8887: [u8; 16] = [64, 36, 75, 238, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255];
+///let values: [u8; 32] = [
+///192, 219, 180, 17, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 36, 75,
238, 253,
+///255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+///];
+///let array_data = ArrayData::builder(DataType::Decimal(23, 6))
+///.len(2)
+///.add_buffer(Buffer::from([..]))
+///.build();
+///let decimal_array = DecimalArray::from(array_data);
+///assert_eq!(2, decimal_array.len());
+///assert_eq!(8_887_000_000, decimal_array.value(0));
+///assert_eq!(-8_887_000_000, decimal_array.value(1));
+///assert_eq!(16, decimal_array.value_length());
+///assert_eq!(23, decimal_array.precision());
+///assert_eq!(6, decimal_array.scale());
Review comment:
@novemberkilo now it's merged, thanks for your patience
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[GitHub] [arrow-rs] alippai commented on a change in pull request #414: Doctests for DecimalArray.
alippai commented on a change in pull request #414:
URL: https://github.com/apache/arrow-rs/pull/414#discussion_r646127829
##
File path: arrow/src/array/array_binary.rs
##
@@ -613,6 +613,32 @@ impl Array for FixedSizeBinaryArray {
}
/// A type of `DecimalArray` whose elements are binaries.
+///
+/// # Examples
+///
+/// ```
+///use arrow::array::{ArrayData, Array, DecimalArray};
+///use arrow::buffer::Buffer;
+///use arrow::datatypes::DataType;
+///// let val_8887: [u8; 16] = [192, 219, 180, 17, 2, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0];
+///// let val_neg_8887: [u8; 16] = [64, 36, 75, 238, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255];
+///let values: [u8; 32] = [
+///192, 219, 180, 17, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 36, 75,
238, 253,
+///255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
+///];
+///let array_data = ArrayData::builder(DataType::Decimal(23, 6))
+///.len(2)
+///.add_buffer(Buffer::from([..]))
+///.build();
+///let decimal_array = DecimalArray::from(array_data);
+///assert_eq!(2, decimal_array.len());
+///assert_eq!(8_887_000_000, decimal_array.value(0));
+///assert_eq!(-8_887_000_000, decimal_array.value(1));
+///assert_eq!(16, decimal_array.value_length());
+///assert_eq!(23, decimal_array.precision());
+///assert_eq!(6, decimal_array.scale());
Review comment:
You'll be able to add `assert_eq!("8887.00",
decimal_array.value_as_string(0));` when I finish the PR. Also I'd keep the
`assert_eq!(8_887_000_000, decimal_array.value(0));` example (to show the
values are i128 values)
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