In this episode, learn about the lazy keyword and how it can help you avoid expensive calculations until you need them.
Hello!
Quick question: on the very last part of the video, the image goes: “Is your constant: …” But I think that lazy can only be used with var as constant properties must have a value at initialisation. Yes? No? What I dont get and I have to set it right ? 
Thanks for your time!
Hi there! You are correct about constants, and you are definitely not the first person to ask me about this particular bit 
What I meant is that if you have a constant that meets these criteria, consider turning that constant into a lazy variable instead.
Noted! Thanks for reply !