Using parseOpt for nullable object

We use parseList when we get multiple rows in our cursor, but when we get only one row, we use parseSingle or parseOpt. However, what is the difference between parseSingle and parseOpt?  In this recipe, we will understand the difference between both and when to use which one.

Getting ready

I'll be using Android Studio 3 to write code. You can get started by adding anko-sqlite dependencies to your project and creating a database helper, like we did in the Using SQLite database in Kotlin recipe. You will need to read and implement the previous recipe to be able to follow this recipe.

How to do it…

If you have read and implemented the previous recipe, you must already have a customers table in your database. Follow the mentioned steps to understand the difference between parseSingle and parseOpt:

1. In the previous recipe, we used parseList to get a list of rows as objects. If we need to get only a single row as an object, then we need to use parseSingle. The following...