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ReactiveCocoa | Cocoa framework and Obj-C dynamism bindings | Reactive Programming library

 by   ReactiveCocoa Swift Version: 12.0.0 License: Non-SPDX

 by   ReactiveCocoa Swift Version: 12.0.0 License: Non-SPDX

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kandi X-RAY | ReactiveCocoa Summary

ReactiveCocoa is a Swift library typically used in Programming Style, Reactive Programming applications. ReactiveCocoa has no bugs, it has no vulnerabilities and it has medium support. However ReactiveCocoa has a Non-SPDX License. You can download it from GitHub.
ReactiveSwift offers composable, declarative and flexible primitives that are built around the grand concept of streams of values over time. These primitives can be used to uniformly represent common Cocoa and generic programming patterns that are fundamentally an act of observation. For more information about the core primitives, see ReactiveSwift.
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kandi-support Support

  • ReactiveCocoa has a medium active ecosystem.
  • It has 19983 star(s) with 3573 fork(s). There are 844 watchers for this library.
  • There were 1 major release(s) in the last 12 months.
  • There are 0 open issues and 2001 have been closed. On average issues are closed in 832 days. There are 4 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of ReactiveCocoa is 12.0.0
ReactiveCocoa Support
Best in #Reactive Programming
Average in #Reactive Programming
ReactiveCocoa Support
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quality kandi Quality

  • ReactiveCocoa has 0 bugs and 0 code smells.
ReactiveCocoa Quality
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Average in #Reactive Programming

securitySecurity

  • ReactiveCocoa has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • ReactiveCocoa code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
ReactiveCocoa Security
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Average in #Reactive Programming
ReactiveCocoa Security
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Average in #Reactive Programming

license License

  • ReactiveCocoa has a Non-SPDX License.
  • Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.
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buildReuse

  • ReactiveCocoa releases are available to install and integrate.
  • Installation instructions, examples and code snippets are available.
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ReactiveCocoa Key Features

Cocoa framework and Obj-C dynamism bindings for ReactiveSwift.

What is ReactiveCocoa?

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	// Bind the `name` property of `person` to the text value of an `UILabel`.
	nameLabel.reactive.text <~ person.name

Getting started

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github "ReactiveCocoa/ReactiveCocoa" ~> 10.1

Observables bind 2 textfields

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struct ViewModel {
    var loginEnabled = Bindable<Bool>()
    var email = ""
    var password = ""
    
    init() {
        self.loginEnabled.value = false
    }
    
    func setCredentials(email: String, password: String) {
        self.email = email
        self.password = password
        self.loginEnabled.value = !email.isEmpty && !password.isEmpty
    }
}

var viewModel: ViewModel


override func viewDidLoad {
    super.viewDidLoad()
    self.viewModel.loginEnabled.bind { value in 
        self.logInButton.isEnabled = value ?? false
    }
}

@objc func textFieldDidChange(_ textField: UITextField) {
    self.viewModel.setCredentials(email: self.emailInput.text ?? "", password: self.passwordInput.text ?? "")
}
-----------------------
struct ViewModel {
    var loginEnabled = Bindable<Bool>()
    var email = ""
    var password = ""
    
    init() {
        self.loginEnabled.value = false
    }
    
    func setCredentials(email: String, password: String) {
        self.email = email
        self.password = password
        self.loginEnabled.value = !email.isEmpty && !password.isEmpty
    }
}

var viewModel: ViewModel


override func viewDidLoad {
    super.viewDidLoad()
    self.viewModel.loginEnabled.bind { value in 
        self.logInButton.isEnabled = value ?? false
    }
}

@objc func textFieldDidChange(_ textField: UITextField) {
    self.viewModel.setCredentials(email: self.emailInput.text ?? "", password: self.passwordInput.text ?? "")
}

Electron-notarize problem not signing all binaries

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>com.apple.security.cs.allow-jit</key>
    <true/>
    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
    <true/>
    <key>com.apple.security.cs.allow-dyld-environment-variables</key>
    <true/>
    <key>com.apple.security.cs.disable-library-validation</key>
    <true/>
  </dict>
</plist>
    "mac": {
      "category": "public.app-category.developer-tools",
      "icon": "assets/icon.png",
      "hardenedRuntime": true,
      "gatekeeperAssess": false,
      "entitlements": "assets/mac/entitlements.plist",
      "entitlementsInherit": "assets/mac/entitlements.plist"
    },
    "afterSign": "./scripts/notarizeApp.js",
const path = require('path')
var notarize = require('electron-notarize')

module.exports = async function (params) {
  // Notarization only applies to macOS
  if (process.platform !== 'darwin') {
    return
  }

  let appId = '<your-app-id>'
  let appPath = path.join(
    params.appOutDir,
    `${params.packager.appInfo.productFilename}.app`
  )

  try {
    console.log(`  • Notarizing`)
    await notarize.notarize({
      appBundleId: appId,
      appPath: appPath,
      appleId: process.env.APPLE_ID_EMAIL,
      appleIdPassword: process.env.APPLE_ID_PASSWORD,
    })
  } catch (error) {
    console.error(error)
  }
}
-----------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>com.apple.security.cs.allow-jit</key>
    <true/>
    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
    <true/>
    <key>com.apple.security.cs.allow-dyld-environment-variables</key>
    <true/>
    <key>com.apple.security.cs.disable-library-validation</key>
    <true/>
  </dict>
</plist>
    "mac": {
      "category": "public.app-category.developer-tools",
      "icon": "assets/icon.png",
      "hardenedRuntime": true,
      "gatekeeperAssess": false,
      "entitlements": "assets/mac/entitlements.plist",
      "entitlementsInherit": "assets/mac/entitlements.plist"
    },
    "afterSign": "./scripts/notarizeApp.js",
const path = require('path')
var notarize = require('electron-notarize')

module.exports = async function (params) {
  // Notarization only applies to macOS
  if (process.platform !== 'darwin') {
    return
  }

  let appId = '<your-app-id>'
  let appPath = path.join(
    params.appOutDir,
    `${params.packager.appInfo.productFilename}.app`
  )

  try {
    console.log(`  • Notarizing`)
    await notarize.notarize({
      appBundleId: appId,
      appPath: appPath,
      appleId: process.env.APPLE_ID_EMAIL,
      appleIdPassword: process.env.APPLE_ID_PASSWORD,
    })
  } catch (error) {
    console.error(error)
  }
}
-----------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>com.apple.security.cs.allow-jit</key>
    <true/>
    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
    <true/>
    <key>com.apple.security.cs.allow-dyld-environment-variables</key>
    <true/>
    <key>com.apple.security.cs.disable-library-validation</key>
    <true/>
  </dict>
</plist>
    "mac": {
      "category": "public.app-category.developer-tools",
      "icon": "assets/icon.png",
      "hardenedRuntime": true,
      "gatekeeperAssess": false,
      "entitlements": "assets/mac/entitlements.plist",
      "entitlementsInherit": "assets/mac/entitlements.plist"
    },
    "afterSign": "./scripts/notarizeApp.js",
const path = require('path')
var notarize = require('electron-notarize')

module.exports = async function (params) {
  // Notarization only applies to macOS
  if (process.platform !== 'darwin') {
    return
  }

  let appId = '<your-app-id>'
  let appPath = path.join(
    params.appOutDir,
    `${params.packager.appInfo.productFilename}.app`
  )

  try {
    console.log(`  • Notarizing`)
    await notarize.notarize({
      appBundleId: appId,
      appPath: appPath,
      appleId: process.env.APPLE_ID_EMAIL,
      appleIdPassword: process.env.APPLE_ID_PASSWORD,
    })
  } catch (error) {
    console.error(error)
  }
}

ReactiveSwift pipeline flatMap body transform not executed

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context.saveSignal()
    .mapError { MyError.saveFailed(error: $0) }
    .then(SignalProducer(value: values))

ReactiveSwift pipeline count failures after all complete

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struct UploadResult {
    let item: Item
    let error: Error? // nil if the upload succeeded

    var succeeded: Bool { error == nil }
    var failed: Bool { !succeeded }
}

...

static func upload(_ items: [Item]) -> SignalProducer<[UploadResult], Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
        .scan(into: [UploadResult]()) { ( results: inout [UploadResult], nextResult) in
            results.append(nextResult)
        }
}
Uploader.upload(someItems)
    .on(value: { resultsSoFar in
        // Update UI here
    })
    .take(last: 1)
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)
static func upload(_ items: [Item]) -> SignalProducer<UploadResult, Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
}

...

Uploader.upload(someItems)
    .on(value: { latestResult in
        // Do something with the latest result
    })
    .collect()
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)
-----------------------
struct UploadResult {
    let item: Item
    let error: Error? // nil if the upload succeeded

    var succeeded: Bool { error == nil }
    var failed: Bool { !succeeded }
}

...

static func upload(_ items: [Item]) -> SignalProducer<[UploadResult], Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
        .scan(into: [UploadResult]()) { ( results: inout [UploadResult], nextResult) in
            results.append(nextResult)
        }
}
Uploader.upload(someItems)
    .on(value: { resultsSoFar in
        // Update UI here
    })
    .take(last: 1)
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)
static func upload(_ items: [Item]) -> SignalProducer<UploadResult, Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
}

...

Uploader.upload(someItems)
    .on(value: { latestResult in
        // Do something with the latest result
    })
    .collect()
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)
-----------------------
struct UploadResult {
    let item: Item
    let error: Error? // nil if the upload succeeded

    var succeeded: Bool { error == nil }
    var failed: Bool { !succeeded }
}

...

static func upload(_ items: [Item]) -> SignalProducer<[UploadResult], Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
        .scan(into: [UploadResult]()) { ( results: inout [UploadResult], nextResult) in
            results.append(nextResult)
        }
}
Uploader.upload(someItems)
    .on(value: { resultsSoFar in
        // Update UI here
    })
    .take(last: 1)
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)
static func upload(_ items: [Item]) -> SignalProducer<UploadResult, Never> {
    SignalProducer(items)
        .filter(\.readyForUpload)
        .flatMap(.merge) { item in
            Self.internalUploader(item)
                .map { UploadResult(item: item, error: nil) }
                .flatMapError { error in
                    SignalProducer(value: UploadResult(item: item, error: error))
                }
        }
}

...

Uploader.upload(someItems)
    .on(value: { latestResult in
        // Do something with the latest result
    })
    .collect()
    .attempt { results in
        if !results.allSatisfy(\.succeeded) {
            // At least one of the uploads failed, so send an error
            throw MyError()
        }
    }
    .then(startDownloads)

Combine previous value using Combine

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let producer = [1,2,3].publisher
                      .scan((0,0)) { ($0.1, $1) }

producer.sink { 
   print($0) 
}

How to use Facebook BUCK with DTrace files?

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genrule(
    name = "ReactiveObjC_DTrace",
    srcs = [
        "ReactiveObjC/ReactiveObjC/RACSignalProvider.d",
        "ReactiveObjC/ReactiveObjC/RACCompoundDisposableProvider.d",
    ],
    bash = 
"""
    mkdir -p $OUT
    /usr/sbin/dtrace -h -s $SRCDIR/ReactiveObjC/ReactiveObjC/RACSignalProvider.d -o $OUT/RACSignalProvider.h
    /usr/sbin/dtrace -h -s $SRCDIR/ReactiveObjC/ReactiveObjC/RACCompoundDisposableProvider.d -o $OUT/RACCompoundDisposableProvider.h
""",
    out = "ReactiveObjC_DTrace",
    visibility = ["PUBLIC"]
)
apple_third_party_lib(
    name = "ReactiveObjC",
    visibility = ["PUBLIC"],
    srcs = glob([
        "ReactiveObjC/**/*.m",
    ]),
    deps = [ 
        "//Pods:ReactiveObjC_DTrace",
    ],
    exported_headers = glob([
        "ReactiveObjC/**/*.h",
        "$(location :ReactiveObjC_DTrace)/**/*.h"
    ]),
    frameworks = [
        "$PLATFORM_DIR/Developer/Library/Frameworks/Foundation.framework",
    ],
)
-----------------------
genrule(
    name = "ReactiveObjC_DTrace",
    srcs = [
        "ReactiveObjC/ReactiveObjC/RACSignalProvider.d",
        "ReactiveObjC/ReactiveObjC/RACCompoundDisposableProvider.d",
    ],
    bash = 
"""
    mkdir -p $OUT
    /usr/sbin/dtrace -h -s $SRCDIR/ReactiveObjC/ReactiveObjC/RACSignalProvider.d -o $OUT/RACSignalProvider.h
    /usr/sbin/dtrace -h -s $SRCDIR/ReactiveObjC/ReactiveObjC/RACCompoundDisposableProvider.d -o $OUT/RACCompoundDisposableProvider.h
""",
    out = "ReactiveObjC_DTrace",
    visibility = ["PUBLIC"]
)
apple_third_party_lib(
    name = "ReactiveObjC",
    visibility = ["PUBLIC"],
    srcs = glob([
        "ReactiveObjC/**/*.m",
    ]),
    deps = [ 
        "//Pods:ReactiveObjC_DTrace",
    ],
    exported_headers = glob([
        "ReactiveObjC/**/*.h",
        "$(location :ReactiveObjC_DTrace)/**/*.h"
    ]),
    frameworks = [
        "$PLATFORM_DIR/Developer/Library/Frameworks/Foundation.framework",
    ],
)

Community Discussions

Trending Discussions on ReactiveCocoa
  • Observables bind 2 textfields
  • Electron-notarize problem not signing all binaries
  • ReactiveSwift pipeline flatMap body transform not executed
  • ReactiveSwift pipeline count failures after all complete
  • Combine previous value using Combine
  • How to use Facebook BUCK with DTrace files?
Trending Discussions on ReactiveCocoa

QUESTION

Observables bind 2 textfields

Asked 2021-Mar-22 at 00:33

So now in the app i'm currently developing I decided to refactor it by moving to the MVVM design pattern. And here it is where I got to know the famous "Observables".
I managed to understand how they work and the importance of their existence when using MVVM, I've read a couple of explanations on the different techniques for the implementation. By techniques I mean:

  • Observables (the one I'm currently using)
  • Event Bus / Notification Center
  • FRP Techinque (ReactiveCocoa / RxSwift)

I've declared my Bindable class like this:

import UIKit

class Bindable<T> {
    var value: T? {
        didSet {
            observer?(value)
        }
    }
    
    var observer: ((T?) -> ())?
    
    func bind(observer: @escaping (T?) -> ()) {
        self.observer = observer
    }
    
}

What I wanted to do is to bind 2 UITextField's (that are inside one of my ViewController's) with the respective ViewModel. Inside my ViewController there are 2 textfields (emailInput - passwordInput) and a 'Log In' button, that I want it to be disabled unless both textfields aren't empty.
For that I've added both textfield's this target:

emailInput.addTarget(self, action: #selector(textFieldDidChange), for: .editingChanged)
passwordInput.addTarget(self, action: #selector(textFieldDidChange), for: .editingChanged)

Then:

/// Enable / Disable --> Log In button
    @objc func textFieldDidChange(_ textField: UITextField) {
        if (emailInput.text == "") || (passwordInput.text == "") {
            logInButton.enableButton(false)
        } else {
            logInButton.enableButton(true)
        }
    }

But my question is... How could I implement this same thing inside my ViewModel??
And is it possible to do a two-way binding using my Bindable class?

(If more code is needed to solve this, just ask me to and I'll edit the question)

ANSWER

Answered 2021-Mar-22 at 00:33

Observable is used to communicate changes from the view model to the view. There is no need for your view model to use the Observable pattern in order to respond to the updates in your text fields. You can provide a simple function setCredentials(email: String, password: String). In this function you can check if those values are empty and set var loginEnabled: Bindable<Bool>. Your view observes the loginEnabled and sets the login button state accordingly.

struct ViewModel {
    var loginEnabled = Bindable<Bool>()
    var email = ""
    var password = ""
    
    init() {
        self.loginEnabled.value = false
    }
    
    func setCredentials(email: String, password: String) {
        self.email = email
        self.password = password
        self.loginEnabled.value = !email.isEmpty && !password.isEmpty
    }
}

Then in your view controller you have something like


var viewModel: ViewModel


override func viewDidLoad {
    super.viewDidLoad()
    self.viewModel.loginEnabled.bind { value in 
        self.logInButton.isEnabled = value ?? false
    }
}

@objc func textFieldDidChange(_ textField: UITextField) {
    self.viewModel.setCredentials(email: self.emailInput.text ?? "", password: self.passwordInput.text ?? "")
}

Source https://stackoverflow.com/questions/66738037

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install ReactiveCocoa

ReactiveCocoa supports macOS 10.9+, iOS 8.0+, watchOS 2.0+, and tvOS 9.0+.
Add the ReactiveCocoa repository as a submodule of your application’s repository.
Run git submodule update --init --recursive from within the ReactiveCocoa folder.
Drag and drop ReactiveCocoa.xcodeproj and Carthage/Checkouts/ReactiveSwift/ReactiveSwift.xcodeproj into your application’s Xcode project or workspace.
On the “General” tab of your application target’s settings, add ReactiveCocoa.framework and ReactiveSwift.framework to the “Embedded Binaries” section.
If your application target does not contain Swift code at all, you should also set the EMBEDDED_CONTENT_CONTAINS_SWIFT build setting to “Yes”.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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