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iOS Swift Basics (retired) Collections Modifying an Array

Posted by Unsubscribed User
Unsubscribed User
355 Points

Removing item from list and assigning back as a constant or variable

At 6.47, Amit says that by using the let item (2)=todo.removeAtIndex (1), you can assign the last value as a constant or variable.

Why would this be important, any specific reasons?

Thanks Faizal

X. Szuh
X. Szuh
2,486 Points

In the to do list context, once the task is complete it should be removed and perhaps you want to construct another array or list of completed items for display perhaps?

1 Answer

Stephen Whitfield
Stephen Whitfield
16,771 Points
Stephen Whitfield
Stephen Whitfield
16,771 Points

It's useful for a plethora of reasons... reasons I couldn't exactly tell you unless you gave me the context. For example, let's say you wanted to store that value in an array or dictionary. It would be convenient/code-hygenic for you to create a temporary variable and store that value there. What if you also needed it later in the code? You have it assigned to a variable now so you can grab it whenever you need it.