Pick is a utility type that helps you create new types based on existing types by picking just the properties you are interested in.
Instead of redefining a whole new type, you can easily derive it from another one.
Just "pick" the props. See below for example ??
Tuples are arrays with a fixed length.
Sometimes it can be more convenient to work with tuples instead of objects.
You get the type-safety when using the index also.
Here's a return type that gives us the weekday and its number. See below for example ??
![Typescript - Usage of Pick and tuple Keywords]()