Reactive programming has collection of operators which mainly enable the developers to handle, modify, filter, and transform the data emitted by the source. The list of operators is unending. You can also consider the operators as predefined functions, taking lots of load from the developer's shoulder. It's always great to spend some time in understanding the operator and their functionalities. Studying them is good, but unfortunately we hardly find a perfect match of the operator for the data transformation which matches the requirements. Don't worry! Single operators don't match, so let's combine them.
The developers can use two or more operators and combine them in such a way that the memory and time overhead reduces while handling the data flow known as operator fusion. While performing the data fusion we must keep the following things...