Functions With an Implicit Return
search here - https://docs.swift.org/swift-book/LanguageGuide/Functions.html

Where "return"? How it work?

Random tests almost never generate pangrams.
Almost all tests can be passed with return false as a solution.

Implemented it

Oh, that's a great use of lazy! Thanks for the suggestion, will apply it to the solution :)

No random tests.

Approved

Thank you so much brother

Sure thing! This is the Ternary Operator, it's basically a single line if condition. The question mark asks whatever is on it's left if it's true or false. It then tells the colon to pick whatever is to it's left if the condition is true, or to it's right if the condition is false

You should take a look at the official Swift documentation https://docs.swift.org/swift-book/LanguageGuide/BasicOperators.html. You can search for Ternary and you'll find whatever you're looking for

hey could someone explain this code to me please

Great solution. However, you can still be more expressive than this in Swift. Like:
!"abcdefghijklmnopqrstuvwxyz".lazy.map(string.lowercased().contains).contains(false)
And it should be a bit faster, because you don't need to iterate over the whole input, just all the letters in the alphabet. And thanks to lazy, it should stop the first time it gets false.

Lovely <3 gg wp

Approved

Maybe change the function to func findUniq<N: Numeric>(_ arr: [N]) -> N {

Yep, this is mostly a math challenge