In short now. In long, first off these aren't dele...

# android

[kz]

In short now. In long, first off these aren't delegates (Kotlin has a concept named delegates so let's keep the nomenclature correct). Let is just an extension function on any non-nullable type that will bind the receiver into the lambda parameter and evaluates to whatever your lambda returns. The idiomatic x?.let {} construct uses that combined with the safe-call operator ?. to only invoke the let on a non-null receiver. If the receiver is null, the safe-call evaluates to null so you can use the elvis operator to continue chaining.