Hi,
I am a beginner. Some times I see "?." in the code. What does it mean? For example:
speechRecognizer?.delegate = self
Thanks
Hi,
I am a beginner. Some times I see "?." in the code. What does it mean? For example:
speechRecognizer?.delegate = self
Thanks
Thats optional chaining, read more here:
https://docs.swift.org/swift-book/LanguageGuide/OptionalChaining.html
Thanks a lot! This is very useful!