Jefffrey commented on code in PR #18019:
URL: https://github.com/apache/datafusion/pull/18019#discussion_r2443375029
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datafusion/expr-common/src/signature.rs:
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@@ -142,6 +142,16 @@ pub enum Volatility {
/// DataType::Timestamp(TimeUnit::Nanosecond,
Some(TIMEZONE_WILDCARD.into())),
/// ]);
/// ```
+///
+/// Represents the arity (number of arguments) of a function signature
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Arity {
+ /// Fixed number of arguments
+ Fixed(usize),
+ /// Variable number of arguments (e.g., Variadic, VariadicAny, UserDefined)
+ Variable,
+}
Review Comment:
FYI this definition detached the docstring of `TypeSignature`
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