Popularity
0.6
Declining
Activity
0.0
Stable
7
4
2

Programming language: Swift
License: MIT License
Latest version: v1.0.0

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README

STDevRxExt

CI Status Platform Cocoapods SPM compatible codecov License

Example

To run the [Example.playground](Example/Example.playground), clone the repo, and run pod install from the Example directory first.

Requirements

  • iOS 8.0+
  • tvOS 9.0+
  • macOS 10.10+
  • watchOS 3.0+
  • Swift 5.0+
  • Xcode 11+

Installation

CocoaPods STDevRxExt is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'STDevRxExt'

Swift Package Manager You can use The Swift Package Manager to install STDevRxExt by adding the proper description to your Package.swift file:

import PackageDescription

let package = Package( name: "YOUR_PROJECT_NAME", targets: [], dependencies: [ .package(url: "https://github.com/STDevTM/STDevRxExt.git", from: "1.0.0") ] )

Next, add STDevRxExt to your targets dependencies like so: .target( name: "YOUR_TARGET_NAME", dependencies: [ "STDevRxExt", ] ), Then run swift package update.

List of All Extensions

Filter Extensions

Allow only true elements from Observable<Bool>:

let disposeBag = DisposeBag()

Observable.of(true, false, false, true, true)
    .allowTrue()
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

true
true
true

You can use allowTrue on Bool? as well. In this case nil elements will be ignored:

let disposeBag = DisposeBag()

Observable.of(true, false, nil, true, nil, true)
    .allowTrue()
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

true
true
true

If you prefer to allow nil elements as well then you can use allowTrueOrNil like this:

let disposeBag = DisposeBag()

Observable.of(true, false, nil, true, nil, true, false)
    .allowTrueOrNil()
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

true
true
true
true
true

Map Extensions

You can map every element in sequence with provided value.

let disposeBag = DisposeBag()

Observable.of(1, 5, 7, 8)
    .map(to: "ping")
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

ping
ping
ping
ping

You can map every element in sequence by procided Key Path.

let disposeBag = DisposeBag()

   let observable = Observable.of(
            Book(title: "Twenty Thousand Leagues Under the Sea", author: Author("Jules", "Verne")),
            Book(title: "Hamlet", author: Author("William", "Shakespeare")),
            Book(title: "Hearts of Three", author: Author("Jack", "London"))
        )

    observable
        .map(at: \.title)
        .subscribe(onNext: { print($0) })
        .disposed(by: disposeBag)

    observable
        .map(at: \.author.firstName)
        .subscribe(onNext: { print($0) })
        .disposed(by: disposeBag)

Output will be:

Twenty Thousand Leagues Under the Sea
Hamlet
Hearts of Three

Jules
William
Jack

Cast Extensions

You can do downcast elements in sequence using cast(to:).

let disposeBag = DisposeBag()

Observable<CustomStringConvertible>.of("1", "5", "7", "8")
    .cast(to: String.self)
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

Optional("1")
Optional("5")
Optional("7")
Optional("8")

In order to do force downcast use forceCast(to:) liek this:

let disposeBag = DisposeBag()

Observable<CustomStringConvertible>.of("1", "5", "7", "8")
    .forceCast(to: String.self)
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)

Output will be:

1
5
7
8

In case of downcast exception it will return Observable.error(RxCastError.castFailed).

Allow extension functions can be used on Driver as well, except forceCast(to:).

Other Extensions

Sometimes we need to update some subject or observer on each next event of Observable or Driver. For example:

request
    .do(onNext: { [weak self] _ in
        self?.inProgress.onNext(true)
    })
    .flatMap {
        service.doRequest($0)
    }
    .do(onNext: { [weak self] _ in
        self?.inProgress.onNext(false)
    })
    .subscribe(onNext: { response in
        dump(response)
    })
    .disposed(by: disposeBag)

You can use update(_:with:) method for shorting code like this:

request
    .update(inProgress, with: true)
    .flatMap {
        service.doRequest($0)
    }
    .update(inProgress, with: false)
    .subscribe(onNext: { response in
        dump(response)
    })
    .disposed(by: disposeBag)

Author

Tigran Hambardzumyan, [email protected]

Support

Feel free to open issues with any suggestions, bug reports, feature requests, questions.

Let us know!

Weโ€™d be really happy if you sent us links to your projects where you use our component. Just send an email to [email protected] And do let us know if you have any questions or suggestion.

License

STDevRxExt is available under the MIT license. See the LICENSE file for more info.


*Note that all licence references and agreements mentioned in the STDevRxExt README section above are relevant to that project's source code only.