Explain the difference between promise and observable in angular?
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Answer / Vishesh Bahadur Srivastav
In Angular, a Promise is a JavaScript object that represents the eventual completion or failure of an asynchronous operation. It has a `then` method for handling the resolved value and a `catch` method for handling errors. An Observable, on the other hand, is a stream of data that can be asynchronously emitted over time. Observables have various operators (such as `map`, `filter`, and `concat`) to manipulate the stream of data and a subscription mechanism to listen for changes.
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