Difference between revisions of "Observable versus promise"
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Karl Jones (Talk | contribs) (Created page with "This article contrasts observables (see Observer pattern) with promises (see Futures and promises). == Run conditions == * Observables are lazy -- they do not run un...") |
Karl Jones (Talk | contribs) (→See also) |
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== See also == | == See also == | ||
| − | * [[ | + | * [[Futures and promises]] |
* [[Observer pattern]] | * [[Observer pattern]] | ||
* [[Promise object (JavaScript)]] | * [[Promise object (JavaScript)]] | ||
[[Category:Computer programming]] | [[Category:Computer programming]] | ||
Latest revision as of 15:29, 2 January 2017
This article contrasts observables (see Observer pattern) with promises (see Futures and promises).
Run conditions
- Observables are lazy -- they do not run unless subscribed to
- Promises run no matter what
Setup and teardown
- Observables can define both setup and teardown aspects of asynchronous behavior.
Cancellable
- Observables are cancellable.
Retriability
- Observables can be retried
- To retry promises, a caller must have access to the original function that returned the promise.
