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Reduce, Aggregate and Flatmap Operators of Sequencing

Reduce, Aggregate and Flatmap Operators of Sequencing

Learn to operate the reduce, aggregate and flatMap operators of sequencing.

Reduce

The reduce operator, also known as fold, takes an Observable and returns a new one that always contains a single item, which is the result of applying a function over each element. This function receives the current element and the result of the function’s previous invocation.

Note: The reduce function has another parameter that is optional and can be used to pass a starting seed value.

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