How can I perform operations in JavaScript just like we do pipeline of operations in Java streams?

Question

In Java 8 using streams when I chain methods one after the another the execution of operations are performed in pipelined manner.

Example:

List

        

Answer 1

I would suggest to use libraries like RxJS. This gives you more control over the kind of processing, should it be sequential, parallel or whatsoever.

Here is an example, which is close to what you expect:

const source = Rx.Observable.from([{name: 'Joe', age: 30}, {name: 'Frank', age: 20},{name: 'Ryan', age: 50}]);
const example = source.map(person => {
  console.log("Mapping1" + person.name)
  return person.name
});
const subscribe = example.subscribe(val => console.log(val));

outputs:

"Mapping1Joe"
"Joe"
"Mapping1Frank"
"Frank"
"Mapping1Ryan"
"Ryan"