Amalgamate

Amalgamate: combine or unite to form one organization or structure.

The Amalgamate package extends the Combine framework with handy utilities.

Installation

Amalgamate is only available as a Swift Package. If you’re using Xcode 11, you can add it using File > Swift Packages > Add Package Dependency...

Usage

Import the Amalgamate package: import Amalgamate.

Retry

The Retry publisher retries an upstream publisher when a given condition is met. You can pass a publisher to run before retrying.

upstreamPublisher.retry { value in
    return indicatesFailure(value)
}

Restarts the upstream publisher if the value it sent indicates failure. Failures will just be propagated downstream.

apiCallPublisher.retry(butFirst: authenticatePublisher) { response in
    return response.statusCode == 401
}

Restarts the API call publisher if the response indicates being unauthorized, but will first authenticate using the authenticate publisher.