How does changing the composition of elements in Flow during its execution affect its operation and data flow?

In Kotlin Flow, the composition of elements does not change directly during execution, as Flow represents a cold data stream that generates elements on demand.

If the data source or the logic for generating elements changes during execution, it affects what data will be emitted next. For example, if Flow is built based on a collection, and that collection is modified, then the next subscription to the Flow will receive the updated data.

It is important to understand that Flow itself does not store state and does not modify already emitted elements. Changes in the composition of elements are usually achieved through transformation operators (map, filter, flatMap, etc.) or by creating new Flows with updated data.

Thus, changing the composition of elements affects the data stream, forming a new set of emitted values, but does not alter the elements that have already passed through the Flow.