LaunchDarkly+Combine

An easy to use LaunchDarkly framework that adds support for Combine.

Requirements

Installation

Current support is only for SPM, feel free to open a PR to add other package managers.

Swift Package Manager

The Swift Package Manager is a dependency manager integrated into the swift compiler and Xcode.

To integrate LaunchDarkly+Combine into an Xcode project, go to the project editor, and select Swift Packages. From here hit the + button and follow the prompts using https://github.com/ericlewis/LaunchDarkly-Combine.git as the URL.

To include LaunchDarkly+Combine in a Swift package, simply add it to the dependencies section of your Package.swift file. And add the product "LaunchDarkly+Combine" as a dependency for your targets.

dependencies: [
    .package(url: "https://github.com/ericlewis/LaunchDarkly-Combine.git", .upToNextMinor(from: "2.0.0"))
]

Example

import Combine
import LaunchDarkly_Combine
import LaunchDarkly

func observeFlag<T: Decodable>(key: LDFlagKey) -> AnyPublisher<T, Error> {
    LDClient.get()!
        .variationPublisher(forKey: key)
        .decode()
        .eraseToAnyPublisher()
}

func observeMyBoolFlag() -> AnyPublisher<Bool, Never> {
   return observeFlag(key: "#FLAG_KEY")
            .replaceError(with: false) // Default value
}

LDClient.start(config: LDConfig(mobileKey: "#YOUR_MOBILE_KEY#"))

var cancellable: AnyCancellable?
cancellable = observeMyBoolFlag()
    .sink {
        print($0)
    }

Project Structure

Extensions

• Contains the code for extending LDClient with Combine.

License

Copyright (c) 2020 Eric Lewis

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.