简介

    git地址: https://github.com/ReactiveX/RxSwift
    参考资料:http://t.swift.gg/d/2-rxswift
    
    ReactiveX是通过可观察的流实现异步编程的一种API，它结合了观察者模式、迭代器模式和函数式编程的精华，RxSwift 是 ReactiveX 编程思想的一种实现。

RxOptional

git地址: https://github.com/RxSwiftCommunity/RxOptional

• filterNil

Observable<String?>
    .of("One", nil, "Three")
    .filterNil()
    // Type is now Observable<String>
    .subscribe { print($0) }
输出:
next(One)
next(Three)
completed

• replaceNilWith

Observable<String?>
    .of("One", nil, "Three")
    .replaceNilWith("Two")
    // Type is now Observable<String>
    .subscribe { print($0) }
输出:
next(One)
next(Two)
next(Three)
completed

• errorOnNil:(对Driver无效)

Observable<String?>
    .of("One", nil, "Three")
    .errorOnNil()
    // Type is now Observable<String>
    .subscribe { print($0) }
输出:
next(One)
error(Found nil while trying to unwrap type <Optional<String>>)

• catchOnNil:

Observable<String?>
    .of("One", nil, "Three")
    .catchOnNil {
        return Observable<String>.just("A String from a new Observable")
    }
    // Type is now Observable<String>
    .subscribe { print($0) }
输出:
next(One)
next(A String from a new Observable)
next(Three)
completed

• distinctUntilChanged

Observable<Int?>
    .of(5, 6, 6, nil, nil, 3)
    .distinctUntilChanged()
    .subscribe { print($0) }
输出:
next(Optional(5))
next(Optional(6))
next(nil)
next(Optional(3))
completed

NSObject-Rx

git地址: https://github.com/RxSwiftCommunity/NSObject-Rx 不用总是很麻烦的添加 let disposeBag = DisposeBag() ;直接调用rx.disposeBag

RxAlamofire

Alamofire的Rx扩展 git地址: https://github.com/RxSwiftCommunity/RxAlamofire

let formatter = NSNumberFormatter()
formatter.numberStyle = .CurrencyStyle
formatter.currencyCode = "USD"
if let fromValue = NSNumberFormatter().numberFromString(self.fromTextField.text!) {

RxAlamofire.requestJSON(.get, sourceStringURL)
                .debug()
                .subscribe(onNext: { [weak self] (r, json) in
                    if let dict = json as? [String: AnyObject] {
                        let valDict = dict["rates"] as! Dictionary<String, AnyObject>
                        if let conversionRate = valDict["USD"] as? Float {
                            self?.toTextField.text = formatter
                                .string(from: NSNumber(value: conversionRate * fromValue))
                        }
                    }
                    }, onError: { [weak self] (error) in
                        self?.displayError(error as NSError)
                })
                .addDisposableTo(disposeBag)

} else {
    self.toTextField.text = "Invalid Input!"
}

RxDataSources

git地址: https://github.com/RxSwiftCommunity/RxDataSources

RxGesture

https://github.com/RxSwiftCommunity/RxGesture 对手势的rx扩展 详情见git