Once in a while I’m asked what I think about naming observables with an $ suffix. For example: const click$ = Observable.fromEvent(button, 'click');Well, I personally could take it or leave it, but I know some of you can’t live without it. What I want to write an article about, however, is the origin of “Finnish Notation” and different dialects. Hungarian NotationWith Hungarian Notation, one adds
![Observables and Finnish Notation](https://cdn-ak-scissors.b.st-hatena.com/image/square/67ed70e822d87dc00f26aa4f6e5e5314f1f182cb/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F1%2AXPfggxiLsdLlsx1VRp23NQ.jpeg)