Kotlin Design Patterns and Best Practices/

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Control Flow

Control Flow

Learn control flow in Kotlin using the if and when expressions.

We'll cover the following...

We can say that the control flow is the bread and butter of writing programs. We’ll start with two conditional expressions, if and when.

The if expression

In Java, if is a statement. Statements do not return any value. Let’s look at the following function, which returns one of two possible values:

public String getUnixSocketPolling(boolean isBsd) {
    if (isBsd) {
       return "kqueue";
     }
     else {
          return "epoll";
     }
}
if statement in Java

While this example is easy to follow, ...