neilconway commented on code in PR #11002:
URL: https://github.com/apache/arrow-rs/pull/11002#discussion_r4038771318
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arrow-array/src/types.rs:
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@@ -1418,8 +1418,12 @@ pub trait DecimalType:
/// "Decimal32", "Decimal64", "Decimal128" or "Decimal256", for use in
error messages
const PREFIX: &'static str;
- /// Formats the decimal value with the provided precision and scale
- fn format_decimal(value: Self::Native, precision: u8, scale: i8) -> String;
+ /// Formats `value` with `scale` fractional digits. The value is always
Review Comment:
`write_decimal` is also public and already writes into a `fmt::Write`. Happy
to add a `DecimalType`/`PrimitiveArray`-level wrapper in a follow-up if you
think it's worth having.
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