title: How to declare a 2d array of unknown size
body: <p>I did this for the implementation.</p>
  <pre><code>csvData := make([][]string, 100)
  for i := range csvData {
                  csvData[i] = make([]string, 100)
              }
  </code></pre>
  <p>But I want to remove 100 since I don't know the actual size of the array. I want to push some string type elements into the 2d array. Basically I am reading a CSV file and want to extract its elements and store them in a 2d array. What would be a simple way to do so?</p>