c

Cargo.toml

@@ -55,8 +55,8 @@ hex = "0.4.3"
 indexmap = { version = "2", features = ["std"] }
 itoa = "1.0.6"
 itoap = { version = "1", features = ["simd"] }
-libc = "0.2"
 kstring = { version = "2.0.2", features = ["arc", "max_inline", "serde"] }
+libc = "0.2"
 memchr = "2.6"
 memmap = { package = "memmap2", version = "0.7" }
 multiversion = "0.7"

crates/polars-arrow/src/ffi/schema.rs

@@ -75,7 +75,7 @@ impl ArrowSchema {
         {
             flags += *is_ordered as i64;
             // we do not store field info in the dict values, so can't recover it all :(
-            let field = Field::new(PlSmallStr::const_default(), values.as_ref().clone(), true);
+            let field = Field::new(PlSmallStr::EMPTY, values.as_ref().clone(), true);
             Some(Box::new(ArrowSchema::new(&field)))
         } else {
             None

crates/polars-arrow/src/io/ipc/read/common.rs

@@ -280,11 +280,7 @@ pub fn read_dictionary<R: Read + Seek>(
     };
 
     // Make a fake schema for the dictionary batch.
-    let fields = vec![Field::new(
-        PlSmallStr::const_default(),
-        value_type.clone(),
-        false,
-    )];
+    let fields = vec![Field::new(PlSmallStr::EMPTY, value_type.clone(), false)];
     let ipc_schema = IpcSchema {
         fields: vec![first_ipc_field.clone()],
         is_little_endian: ipc_schema.is_little_endian,

crates/polars-arrow/src/mmap/mod.rs

@@ -186,7 +186,7 @@ unsafe fn mmap_dictionary<T: AsRef<[u8]>>(
     };
 
     // Make a fake schema for the dictionary batch.
-    let field = Field::new(PlSmallStr::const_default(), value_type.clone(), false);
+    let field = Field::new(PlSmallStr::EMPTY, value_type.clone(), false);
 
     let chunk = _mmap_record(
         &[field],

crates/polars-core/src/chunked_array/array/iterator.rs

@@ -26,7 +26,7 @@ impl ArrayChunked {
     /// The lifetime of [AmortSeries] is bound to the iterator. Keeping it alive
     /// longer than the iterator is UB.
     pub fn amortized_iter(&self) -> AmortizedListIter<impl Iterator<Item = Option<ArrayBox>> + '_> {
-        self.amortized_iter_with_name(PlSmallStr::const_default())
+        self.amortized_iter_with_name(PlSmallStr::EMPTY)
     }
 
     /// This is an iterator over a [`ArrayChunked`] that save allocations.

crates/polars-core/src/chunked_array/builder/list/anonymous.rs

@@ -9,7 +9,7 @@ pub struct AnonymousListBuilder<'a> {
 
 impl Default for AnonymousListBuilder<'_> {
     fn default() -> Self {
-        Self::new(PlSmallStr::const_default(), 0, None)
+        Self::new(PlSmallStr::EMPTY, 0, None)
     }
 }
 
@@ -91,7 +91,7 @@ impl<'a> AnonymousListBuilder<'a> {
                 Some(dt) => DataType::List(Box::new(dt)),
             };
 
-            let mut ca = ListChunked::with_chunk(PlSmallStr::const_default(), arr);
+            let mut ca = ListChunked::with_chunk(PlSmallStr::EMPTY, arr);
             if slf.fast_explode {
                 ca.set_fast_explode();
             }
@@ -111,7 +111,7 @@ pub struct AnonymousOwnedListBuilder {
 
 impl Default for AnonymousOwnedListBuilder {
     fn default() -> Self {
-        Self::new(PlSmallStr::const_default(), 0, None)
+        Self::new(PlSmallStr::EMPTY, 0, None)
     }
 }
 
@@ -151,7 +151,7 @@ impl ListBuilderTrait for AnonymousOwnedListBuilder {
             Some(dt) => DataType::List(Box::new(dt)),
         };
 
-        let mut ca = ListChunked::with_chunk(PlSmallStr::const_default(), arr);
+        let mut ca = ListChunked::with_chunk(PlSmallStr::EMPTY, arr);
         if slf.fast_explode {
             ca.set_fast_explode();
         }

crates/polars-core/src/chunked_array/builder/mod.rs

@@ -46,7 +46,7 @@ where
         let chunks = iter
             .into_iter()
             .map(|(values, opt_buffer)| to_primitive::<T>(values, opt_buffer));
-        ChunkedArray::from_chunk_iter(PlSmallStr::const_default(), chunks)
+        ChunkedArray::from_chunk_iter(PlSmallStr::EMPTY, chunks)
     }
 }
 

crates/polars-core/src/chunked_array/cast.rs

@@ -617,7 +617,7 @@ fn cast_list(
     // SAFETY: inner dtype is passed correctly
     let s = unsafe {
         Series::from_chunks_and_dtype_unchecked(
-            PlSmallStr::const_default(),
+            PlSmallStr::EMPTY,
             vec![arr.values().clone()],
             ca.inner_dtype(),
         )
@@ -646,7 +646,7 @@ unsafe fn cast_list_unchecked(ca: &ListChunked, child_type: &DataType) -> Polars
     // SAFETY: inner dtype is passed correctly
     let s = unsafe {
         Series::from_chunks_and_dtype_unchecked(
-            PlSmallStr::const_default(),
+            PlSmallStr::EMPTY,
             vec![arr.values().clone()],
             ca.inner_dtype(),
         )
@@ -682,7 +682,7 @@ fn cast_fixed_size_list(
     // SAFETY: inner dtype is passed correctly
     let s = unsafe {
         Series::from_chunks_and_dtype_unchecked(
-            PlSmallStr::const_default(),
+            PlSmallStr::EMPTY,
             vec![arr.values().clone()],
             ca.inner_dtype(),
         )