diff --git a/docs/aggregate.md b/docs/aggregate.md
index 96da43e..f5450a5 100644
--- a/docs/aggregate.md
+++ b/docs/aggregate.md
@@ -46,7 +46,7 @@ fn vertical_weighted_mean(inputs: &[Series]) -> PolarsResult<Series> {
         }
     });
     let result = numerator / denominator;
-    Ok(Series::new("", vec![result]))
+    Ok(Series::new(PlSmallStr::EMPTY, vec![result]))
 }
 ```
 
diff --git a/docs/arrays.md b/docs/arrays.md
index 796434a..e644f1e 100644
--- a/docs/arrays.md
+++ b/docs/arrays.md
@@ -76,7 +76,7 @@ And we can finally move to the actual plugin code:
 // #[polars_expr(output_type=Array)]
 pub fn point_2d_output(_: &[Field]) -> PolarsResult<Field> {
     Ok(Field::new(
-        "point_2d",
+        PlSmallStr::from_static("point_2d"),
         DataType::Array(Box::new(DataType::Float64), 2),
     ))
 }
diff --git a/docs/cum_sum.md b/docs/cum_sum.md
index 6af65be..b704e04 100644
--- a/docs/cum_sum.md
+++ b/docs/cum_sum.md
@@ -50,7 +50,6 @@ fn cum_sum(inputs: &[Series]) -> PolarsResult<Series> {
             }
         })
         .collect_trusted();
-    let out: Int64Chunked = out.with_name(ca.name());
     Ok(out.into_series())
 }
 ```
diff --git a/docs/life_pt1.md b/docs/life_pt1.md
index 5b9de0a..0aa9697 100644
--- a/docs/life_pt1.md
+++ b/docs/life_pt1.md
@@ -267,7 +267,7 @@ fn life_step(inputs: &[Series]) -> PolarsResult<Series> {
 
     let len = lf.len();
 
-    let mut out: Int64Chunked = mid
+    let out: Int64Chunked = mid
         .iter()
         .enumerate()
         .map(|(idx, val)| {
@@ -297,7 +297,6 @@ fn life_step(inputs: &[Series]) -> PolarsResult<Series> {
             })
         })
         .collect_trusted();
-    out.rename(ca_curr.name());
     Ok(out.into_series())
 }
 ```
diff --git a/docs/lists.md b/docs/lists.md
index 3c098f9..5bc403d 100644
--- a/docs/lists.md
+++ b/docs/lists.md
@@ -72,7 +72,7 @@ where
                 (Some(lhs), Some(rhs)) => f(&lhs, &rhs),
                 _ => None,
             })
-            .collect_ca(lhs.name())
+            .collect_ca(PlSmallStr::EMPTY)
     }
 }
 ```
diff --git a/docs/lists_in_lists_out.md b/docs/lists_in_lists_out.md
index 40771ba..f0c43df 100644
--- a/docs/lists_in_lists_out.md
+++ b/docs/lists_in_lists_out.md
@@ -36,8 +36,8 @@ a function to each element of a List Series. In this case, we just want to find
 elements, so we'll do:
 
 ```rust
-fn list_idx_dtype(input_fields: &[Field]) -> PolarsResult<Field> {
-    let field = Field::new(input_fields[0].name(), DataType::List(Box::new(IDX_DTYPE)));
+fn list_idx_dtype(_input_fields: &[Field]) -> PolarsResult<Field> {
+    let field = Field::new(PlSmallStr::EMPTY, DataType::List(Box::new(IDX_DTYPE)));
     Ok(field.clone())
 }
 
@@ -57,7 +57,7 @@ fn non_zero_indices(inputs: &[Series]) -> PolarsResult<Series> {
             .enumerate()
             .filter(|(_idx, opt_val)| opt_val != &Some(0))
             .map(|(idx, _opt_val)| Some(idx as IdxSize))
-            .collect_ca("");
+            .collect_ca(PlSmallStr::EMPTY);
         out.into_series()
     });
     Ok(out.into_series())
diff --git a/docs/struct.md b/docs/struct.md
index 5066dc4..e1458ce 100644
--- a/docs/struct.md
+++ b/docs/struct.md
@@ -34,18 +34,17 @@ Then, we need to get the schema right.
 ```Rust
 fn shifted_struct(input_fields: &[Field]) -> PolarsResult<Field> {
     let field = &input_fields[0];
-    match field.data_type() {
+    match field.dtype() {
         DataType::Struct(fields) => {
             let mut field_0 = fields[0].clone();
-            let name = field_0.name().clone();
             field_0.set_name(fields[fields.len() - 1].name().clone());
             let mut fields = fields[1..]
                 .iter()
                 .zip(fields[0..fields.len() - 1].iter())
-                .map(|(fld, name)| Field::new(name.name(), fld.data_type().clone()))
+                .map(|(fld, name)| Field::new(name.name().clone(), fld.dtype().clone()))
                 .collect::<Vec<_>>();
             fields.push(field_0);
-            Ok(Field::new(&name, DataType::Struct(fields)))
+            Ok(Field::new(PlSmallStr::EMPTY, DataType::Struct(fields)))
         }
         _ => unreachable!(),
     }
@@ -68,18 +67,18 @@ fn shift_struct(inputs: &[Series]) -> PolarsResult<Series> {
         return Ok(inputs[0].clone());
     }
     let mut field_0 = fields[0].clone();
-    field_0.rename(fields[fields.len() - 1].name());
+    field_0.rename(fields[fields.len() - 1].name()).clone();
     let mut fields = fields[1..]
         .iter()
         .zip(fields[..fields.len() - 1].iter())
         .map(|(s, name)| {
             let mut s = s.clone();
-            s.rename(name.name());
+            s.rename(name.name().clone());
             s
         })
         .collect::<Vec<_>>();
     fields.push(field_0);
-    StructChunked::from_series(struct_.name(), &fields).map(|ca| ca.into_series())
+    StructChunked::from_series(PlSmallStr::EMPTY, &fields).map(|ca| ca.into_series())
 }
 ```
 
diff --git a/docs/vec_of_option.md b/docs/vec_of_option.md
index 5962742..df60ab9 100644
--- a/docs/vec_of_option.md
+++ b/docs/vec_of_option.md
@@ -96,7 +96,7 @@ where
             out.into(),
             Some(validity.into()),
         );
-        ChunkedArray::with_chunk(chunked_arr.name(), array)
+        ChunkedArray::with_chunk(PlSmallStr::EMPTY, array)
     } else {
         ChunkedArray::from_vec(chunked_arr.name(), out)
     }
@@ -164,7 +164,7 @@ if first != 0 || last != chunked_arr.len() {
         out.into(),
         Some(validity.into()),
     );
-    ChunkedArray::with_chunk(chunked_arr.name(), array)
+    ChunkedArray::with_chunk(PlSmallStr::EMPTY, array)
 } else {
     ChunkedArray::from_vec(chunked_arr.name(), out)
 }