Using the 'let' Function for Chaining Transformations

The 'let' function in Kotlin is not only useful for handling nullable types, but it also allows for easy chaining of transformations within a single scope. This can enhance code readability by reducing the need for temporary variables and providing a clear context for operations that are dependent on the result of a previous operation.

val userInput: String? = "  Kotlin is awesome!  "

userInput?.let {
    it.trim()                  // Remove leading and trailing whitespace
        .toUpperCase()         // Convert to uppercase
        .split(" ")            // Split into words
        .filter { it.isNotEmpty() }  // Filter out empty strings
        .forEach { println(it) }     // Print each word
}