As mentioned above, this attribute is used to specify the source class. It also hayat be used to specify custom methods to run on before or after the mapping process. In this case, we will provide a function that accepts the emitted value from the source observable and returns that value multipled: Yet, the creators of RxJs chose to increase comp
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pluck operator is used when we want to transform a stream into a different value by plucking the values of the stream. So what are some other common scenarios where we could put the map method to use? Using Array.map, we may also want to transform objects. For instance, suppose we have an array of objects with a first and last name property and we