RxSwift Debug Operators

目录:

RxSwift - 入门
RxSwift Observable Create
RxSwift Subject
RxSwift Combination Operators
RxSwift Transforming Operators
RxSwift Filterning and conditional operators
RxSwift Mathematical and aggregate operators
RxSwift Connectable Operators
RxSwift ErrorHandding Operators
RxSwift Debug Operators

Demo地址

debug

调试模式，会输出运行过程的一些详细信息

example("debug") {
            let bag = DisposeBag()
            var count = 1
            
            let sequenceThatErrors = Observable.create { observer in
                observer.onNext("")
                observer.onNext("")
                observer.onNext("")
                
                if count < 5 {
                    observer.onError(TestError.test)
                    print("Error encountered")
                    count += 1
                }
                
                observer.onNext("")
                observer.onNext("")
                observer.onNext("")
                observer.onCompleted()
                
                return Disposables.create()
            }
            
            sequenceThatErrors
                .retry(3)
                .debug()
                .subscribe(onNext: { print($0) })
                .disposed(by: bag)
        }

---------- debug ----------
2018-10-09 22:02:05.737: Debug.swift:39 (init()) -> subscribed
2018-10-09 22:02:05.788: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.790: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.790: Debug.swift:39 (init()) -> Event next()

Error encountered
2018-10-09 22:02:05.798: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.799: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.799: Debug.swift:39 (init()) -> Event next()

Error encountered
2018-10-09 22:02:05.799: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.800: Debug.swift:39 (init()) -> Event next()

2018-10-09 22:02:05.800: Debug.swift:39 (init()) -> Event next()

Error encountered
2018-10-09 22:02:05.812: Debug.swift:39 (init()) -> Event error(test)
Unhandled error happened: test
 subscription called from:

2018-10-09 22:02:05.812: Debug.swift:39 (init()) -> isDisposed

Resources.total

可以用来查看当前所有的Observable，可便于我们查看某些资源是否释放。

使用其需要做一些特殊操作

cocoaPods

use_frameworks!

target 'RxSwiftDemo' do
    pod 'RxSwift',    '~> 4.0'
    pod 'RxCocoa',    '~> 4.0'
end

post_install do |installer|
    installer.pods_project.targets.each do |target|
        if target.name == 'RxSwift'
            target.build_configurations.each do |config|
                if config.name == 'Debug'
                    config.build_settings['OTHER_SWIFT_FLAGS'] ||= ['-D', 'TRACE_RESOURCES']
                end
            end
        end
    end
end

carthage

carthage build --configuration Debug.

example("RxSwift.Resources.total") {
    print(RxSwift.Resources.total)
    
    let disposeBag = DisposeBag()
    
    print(RxSwift.Resources.total)
    
    let variable = Variable("")
    
    let subscription1 = variable.asObservable().subscribe(onNext: { print($0) })
    
    print(RxSwift.Resources.total)
    
    let subscription2 = variable.asObservable().subscribe(onNext: { print($0) })
    
    print(RxSwift.Resources.total)
    
    subscription1.dispose()
    
    print(RxSwift.Resources.total)
    
    subscription2.dispose()
    
    print(RxSwift.Resources.total)
}
    
print(RxSwift.Resources.total)

---------- RxSwift.Resources.total ----------
1
ℹ️ [DEPRECATED] `Variable` is planned for future deprecation. Please consider `BehaviorRelay` as a replacement. Read more at: https://git.io/vNqvx

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