Kotlin - let run with apply! (https://proandroiddev.com/the-difference-between-kotlins-functions-let-apply-with-run-and-else-ca51a4c696b8)

LetRunWithApply.txt

class MyClass {
    fun test() {
        val str: String = "..."
        val result = str.xxx {
            print(this) // Receiver
            print(it) // Argument
            42 // Block return value
        }
    }
}

╔══════════╦═════════════════╦═══════════════╦═══════════════╗
║ Function ║ Receiver (this) ║ Argument (it) ║    Result     ║
╠══════════╬═════════════════╬═══════════════╬═══════════════╣
║ let      ║ this@MyClass    ║ String("...") ║ Int(42)       ║
║ run      ║ String("...")   ║ N\A           ║ Int(42)       ║
║ run*     ║ this@MyClass    ║ N\A           ║ Int(42)       ║
║ with*    ║ String("...")   ║ N\A           ║ Int(42)       ║
║ apply    ║ String("...")   ║ N\A           ║ String("...") ║
║ also     ║ this@MyClass    ║ String("...") ║ String("...") ║
╚══════════╩═════════════════╩═══════════════╩═══════════════╝