6篇 swift related articles

How to understand sink in swift Combine

Understanding Sink in Swift Combine

Sink is an operator in Swift Combine that allows you to subscribe to a Publisher and perform actions on the emitted elements. It is typically used at the end of a publisher chain to handle the publication's data.

Syntax:

func sink(
    receiveCompletion: (Subscribers.Completion<Output>) -> Void,
    receiveValue: (Output) -> Void
) -> AnyCancellable
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libMobileGestalt MobileGestalt.c:550: no access to InverseDeviceID

XCode debug启动时报这个:

libMobileGestalt MobileGestaltSupport.m:153: xxx does not have sandbox access for frZQaeyWLUvLjeuEK43hmg and IS NOT appropriately entitled

libMobileGestalt MobileGestalt.c:550: no access to InverseDeviceID (see )

解决方法 Edit Scheme-> Run -> Arguments, 在Environment Variables里边添加

OS_ACTIVITY_MODE = Disable

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swift 访问修饰符

在Swift语言中,访问修饰符有五种,分别为fileprivate,private,internal,public和open。
其中 fileprivate和open是Swift 3新添加的。由于过去 Swift对于访问权限的控制,不是基于类的,而是基于文件的。这样会有问题,所以Swift 3新增了两个修饰符对原来的private、public进行细分。

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