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Discussion on: RxJS - Simplifying Complex Operator Chains

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Replies for: Completely agree. I usually do this technique, and not just for RxJS. It's better to read a name of what a function does than having to parse ever...

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Joseph Avery Ferrante • • Edited

Very good point. In my examples I'm not naming the stream variable, but that is definitely also a good source for code clarity/self commenting code.

Also I agree that only having one function in the pipe chain is probably overkill, but really wanted to drive the point home.

To expand on this idea just a bit, you can still make a function more flexible in this case (multiplyBy10 is a bit rigid) by using a factory function:

function multiplyBy(amount: number) {
  return (numberFromStream: number) => amount * numberFromStream;
}

interval(500).pipe(
  map(multiplyBy(10))
)

Thanks for providing a bit of an alternative!