The sample code for those projects are often really cool, but as soon as you get to real world case, you start having problems if you want to be 100% pure. Imh

The sample code for those projects are often really cool, but as soon as you get to real world case, you start having problems if you want to be 100% pure. Imho, for mobile ( ios / android), the problem is that the base sdk aren't thought for reactive style (push vs pull). So all Rx frameworks try to compensate for this mismatch by adding an adaptation layer, and you end up with a really unconvenient code.