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What Promises Do That Observables Can’t – Modus Create

ICYMI: What do promises do that Observables can't? by @akshagrwl  #javascript #angularjs

  • Let’s dive into what Observables are and how they compare against promises in dealing with async data.
  • But promises act on data, and then return.
  • There’s also hot Observables that can emit data regardless of whether or not there are any subscriptions.

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@ModusCreate: “ICYMI: What do promises do that Observables can’t? by @akshagrwl #javascript #angularjs”


Observables are grabbing the spotlight as one of the cool new things Angular 2 is doing, despite having been around for some time. They are positioned to fully eclipse promises as the goto abstraction for dealing with async, among other things. Let’s dive into what Observables are and how they compare against promises in dealing with async data.


What Promises Do That Observables Can’t – Modus Create

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