Great! Let's move on and learn how to change, add, and delete list members.
After speaking with Emma on the phone, you discovered that you have the wrong info about her age in your list. It says she's
35, but she mentioned that she's actually
31. You'd like to update this information.
We learned that we can access the member named
age by using the following notation:
candidate["age"]. When you run this code, R prints
35 to the console.
To change the value of this member, we simply use the assignment operator to feed the member a new value, like this:
candidate[["age"]] <- 31
With this notation, we're able to modify the value stored in the age member of the
candidate list. Now, that member contains the value
You may use the dollar notation as well, like so:
candidate$age <- 31
The result will be exactly the same: age will now contain the value
For unnamed lists, you can use the
[] operator with the appropriate index. Here's an example:
candidate[] <- 31