In Swift's Combine framework, operators are used to process and transform the values emitted by publishers. Here are some of the key operators you can use with publishers in Combine:
6篇 swift related articles
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
对于引用的第三方c代码库,常常出现这种警告,一个个去修改很麻烦,找到个办法可以忽略这种告警。
在XCode的 Build Phases > Compile Sources 中选择所有.c文件, 双击任一行c文件后面那一列,也就是compiler flags。
在里面添加-Wno-shorten-64-to-32
适配第三方的swift lib, 从swift旧版本到swift5, 出现这个问题
Missing argument for parameter #1 in call
Result 这样定义:
原来这样使用 ,报错。
其实修改方法很简单。
默认的空参Void给个括号就行。
completionBlock(.success(()),
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
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。