Adding new example counting formulas and errors (#6)

base/src/lib.rs

@@ -18,6 +18,12 @@
 //! ```rust
 #![doc = include_str!("../examples/hello_world.rs")]
 //! ```
+//!
+//! In this example, we demonstrate our ability to handle formulas and errors:
+//!
+//! ```rust
+#![doc = include_str!("../examples/formulas_and_errors.rs")]
+//! ```
 
 pub mod calc_result;
 pub mod cell;

base/src/model.rs

@@ -1608,6 +1608,7 @@ impl Model {
             None => Ok(cell.get_text(&self.workbook.shared_strings, &self.language)),
         }
     }
+
     /// Returns a list of all cells
     pub fn get_all_cells(&self) -> Vec<CellIndex> {
         let mut cells = Vec::new();