Custom binding syntax

pakobongbong · August 10, 2021, 8:00pm

Hello, total Swift beginner here...

Can someone kindly explain to me what the role of $0 is in the setter for binding for the following code?

Any help would be greatly appreciated.

Joanna_Carter · August 10, 2021, 8:04pm

It represents the new value being passed to the setter

pakobongbong · August 10, 2021, 8:10pm

Thanks for the reply. Would this be an example of shorthand closure syntax?

Joseph_Heck · August 10, 2021, 8:39pm

Yes, and it's also known as an anonymous closure argument (per Closures — The Swift Programming Language (Swift 5.7)).

pakobongbong · August 10, 2021, 8:41pm

Amazing, I will check that out. Thanks so much.