Explore the use of the Unnamed Patterns/Variables in programming languages like Java, Kotlin, and Scala. Enhancing code readability, allowing omission of unnecessary components, and simplifying ...

The variable i is declared using the let keyword. This ensures it is a local variable. Initially, its value is undefined, before the for loop assigns and modifies its value.

Another nifty tool for finding bugs—specifically, when a program fails because no particular spot in memory was assigned to a variable—in Java 14 is Helpful NullPointerExceptions.