Reformat.

crates/polars-ops/src/series/ops/mod.rs

@@ -21,6 +21,8 @@ mod floor_divide;
 mod fused;
 mod horizontal;
 mod index;
+#[cfg(feature = "index_of")]
+mod index_of;
 mod int_range;
 #[cfg(any(feature = "interpolate_by", feature = "interpolate"))]
 mod interpolation;
@@ -53,8 +55,6 @@ mod rle;
 mod rolling;
 #[cfg(feature = "round_series")]
 mod round;
-#[cfg(feature = "index_of")]
-mod index_of;
 #[cfg(feature = "search_sorted")]
 mod search_sorted;
 #[cfg(feature = "to_dummies")]
@@ -87,6 +87,7 @@ pub use fused::*;
 pub use horizontal::*;
 #[cfg(feature = "index_of")]
 pub use index::*;
+pub use index_of::*;
 pub use int_range::*;
 #[cfg(feature = "interpolate")]
 pub use interpolation::interpolate::*;
@@ -125,7 +126,6 @@ pub use rle::*;
 pub use rolling::*;
 #[cfg(feature = "round_series")]
 pub use round::*;
-pub use index_of::*;
 #[cfg(feature = "search_sorted")]
 pub use search_sorted::*;
 #[cfg(feature = "to_dummies")]

crates/polars-plan/src/dsl/function_expr/index_of.rs

@@ -1,4 +1,4 @@
-use polars_ops::series::{index_of as index_of_op, cast_if_lossless};
+use polars_ops::series::{cast_if_lossless, index_of as index_of_op};
 
 use super::*;
 
@@ -17,7 +17,8 @@ pub(super) fn index_of(s: &mut [Column]) -> PolarsResult<Option<Column>> {
         // If the Series is sorted, we can use an optimized binary search to
         // find the value.
         IsSorted::Ascending | IsSorted::Descending if !value.is_null() => {
-            let Ok(value_as_series) = s[1].as_materialized_series().strict_cast(series.dtype()) else {
+            let Ok(value_as_series) = s[1].as_materialized_series().strict_cast(series.dtype())
+            else {
                 // If we can't cast, means we couldn't find the value.
                 return Ok(None);
             };

crates/polars-plan/src/dsl/function_expr/mod.rs

@@ -34,6 +34,8 @@ mod ewm_by;
 mod fill_null;
 #[cfg(feature = "fused")]
 mod fused;
+#[cfg(feature = "index_of")]
+mod index_of;
 mod list;
 #[cfg(feature = "log")]
 mod log;
@@ -57,8 +59,6 @@ mod round;
 #[cfg(feature = "row_hash")]
 mod row_hash;
 pub(super) mod schema;
-#[cfg(feature = "index_of")]
-mod index_of;
 #[cfg(feature = "search_sorted")]
 mod search_sorted;
 mod shift_and_fill;
@@ -929,7 +929,7 @@ impl From<FunctionExpr> for SpecialEq<Arc<dyn ColumnsUdf>> {
             #[cfg(feature = "index_of")]
             IndexOf => {
                 wrap!(index_of::index_of)
-            }
+            },
             #[cfg(feature = "search_sorted")]
             SearchSorted(side) => {
                 map_as_slice!(search_sorted::search_sorted_impl, side)

py-polars/polars/expr/expr.py

@@ -2322,7 +2322,7 @@ def index_of(self, element: NonNestedLiteral | IntoExpr | None) -> Expr:
 
         Examples
         --------
-        >>> df = pl.DataFrame({"a":  [1, None, 17]})
+        >>> df = pl.DataFrame({"a": [1, None, 17]})
         >>> df.select(
         ...     [
         ...         pl.col("a").index_of(17).alias("seventeen"),