Expose column count on individual rows to make it possible to iterate columns just like on Rows.

Side-note: I feel like there's an opportunity to make Rows and Row more alike.

Author: ignatz

libsql/src/rows.rs

@@ -130,6 +130,11 @@ impl Row {
         self.inner.column_str(idx)
     }
 
+    /// Get the count of columns in this set of rows.
+    pub fn column_count(&self) -> usize {
+        self.inner.column_count()
+    }
+
     /// Fetch the name of the column at the provided index.
     pub fn column_name(&self, idx: i32) -> Option<&str> {
         self.inner.column_name(idx)
@@ -284,7 +289,6 @@ pub(crate) trait RowInner: fmt::Debug {
     fn column_str(&self, idx: i32) -> Result<&str>;
     fn column_name(&self, idx: i32) -> Option<&str>;
     fn column_type(&self, idx: i32) -> Result<ValueType>;
-    #[allow(dead_code)]
     fn column_count(&self) -> usize;
 }