Using operators with Flows

In this section, we will focus on the various Flow operators. Kotlin Flow has built-in operators that you can use with Flows. We can collect flows with terminal operators and transform Flows with Intermediate operators.

Collecting Flows with terminal operators

In this section, we will explore the terminal operators you can use on Flows to start the collection of a Flow. The collect function we used in the previous examples is the most used terminal operator. However, there are other built-in terminal Flow operators.

The following are the built-in terminal Flow operators you can use to start the collection of the Flow:

• toList: Collects the Flow and converts it into a list
• toSet: Collects the Flow and converts it into a set
• toCollection: Collects the Flow and converts it into a collection
• count: Returns the number of elements in the Flow
• first: Returns the Flow’s first element or throws a NoSuchElementException if the...