kszucs commented on code in PR #45688:
URL: https://github.com/apache/arrow/pull/45688#discussion_r1984652520


##########
cpp/src/parquet/column_writer.cc:
##########
@@ -1870,67 +1908,40 @@ struct SerializeFunctor {
   }
 };
 
-template <typename ParquetType, typename ArrowType>
-Status WriteArrowSerialize(const ::arrow::Array& array, int64_t num_levels,
-                           const int16_t* def_levels, const int16_t* 
rep_levels,
-                           ArrowWriteContext* ctx, 
TypedColumnWriter<ParquetType>* writer,
-                           bool maybe_parent_nulls) {
-  using ParquetCType = typename ParquetType::c_type;
+template <typename ParquetType>
+template <typename ArrowType>

Review Comment:
   Otherwise I am getting:
   
   ```
   /Users/kszucs/Workspace/arrow/cpp/src/parquet/column_writer.cc:1911:1: 
error: too many template parameters in template redeclaration
    1911 | template <typename ParquetType, typename ArrowType>
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   /Users/kszucs/Workspace/arrow/cpp/src/parquet/column_writer.cc:1212:1: note: 
previous template declaration is here
    1212 | template <typename ParquetType>
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   ```
   
   `ParquetType` applies to `TypedColumnWriterImpl` and `ArrowType` is used for 
the the method `TypedColumnWriterImpl::WriteArrowSerialize`.



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