Hello World: Simple getting started example

Program to create a simple Hello World style Excel spreadsheet using the rust_xlsxwriter library.

Image of the output file:

Image of output from app_hello_world.rs

Code to generate the output file:

// SPDX-License-Identifier: MIT OR Apache-2.0
//
// Copyright 2022-2024, John McNamara, jmcnamara@cpan.org

//! Create a simple Hello World style Excel spreadsheet using the
//! rust_xlsxwriter library.

use rust_xlsxwriter::{Workbook, XlsxError};

fn main() -> Result<(), XlsxError> {
    // Create a new Excel file object.
    let mut workbook = Workbook::new();

    // Add a worksheet to the workbook.
    let worksheet = workbook.add_worksheet();

    // Write a string to cell (0, 0) = A1.
    worksheet.write(0, 0, "Hello")?;

    // Write a number to cell (1, 0) = A2.
    worksheet.write(1, 0, 12345)?;

    // Save the file to disk.
    workbook.save("hello.xlsx")?;

    Ok(())
}