title: Is there a way to check that the user entered an integer with text_io's read!() macro?
body: <p>I want to check that a user entered an integer. If they didn't, I want to redirect them back to the input question:</p>
  
  <pre><code>println!("Place Your Chip");
  let mut y_col: usize;
  
  loop {
      y_col = read!();
      // Check if user entered in a integer or not
      if y_col &lt; 1 || y_col &gt; 6 {
          println!("Column space is 1 to 6");
          continue;
      } else {
          y_col -= 1;
      }
      if game.check_column(y_col) {
          println!("\t\t\t\t\t\t\t\tThe column you choose is full");
          continue;
      }
      break;
  }
  </code></pre>