In Angular 1.x I would sometimes need to make multiple http requests and do something with all the responses. I would throw all the promises in an array and call Promise.all(promises).then(function (results) {...}).

Angular 2 best practices seem to point towards the use of RxJS's Observable as a replacement to promises in http requests. If I have two or more different Observables created from http requests, is there an equivalent to Promise.all()?