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What’s the performance cost of calling an async function? 调用 async 函数的性能成本是多少？
Whenever we use await to call an async function, we mark a potential suspension point in our code – we’re acknowledging that it’s entirely possible our function w...
1年前Why can’t we call async functions using async var? 为什么我们不能使用 async var 调用 async 函数？
Swift’s async let syntax provides short, helpful syntax for running lots of work concurrently, allowing us to wait for them all later on. However, it only works as ...
1年前
How to fix the error “async call in a function that does not support concurrency” 如何修复错误 “async call in a function that does not support concurrency”
This error occurs when you’ve tried to call an async function from a synchronous function, which is not allowed in Swift – asynchronous functions must be able to suspend the...
1年前How to handle different result types in a task group 如何处理任务组中的不同结果类型
Each task in a Swift task group must return the same type of data as all the other tasks in the group, which is often problematic – what if you need one task group to handle ...
1年前What’s the difference between async let, tasks, and task groups? async let、tasks 和 task groups 之间有什么区别？
Swift’s async let, Task, and task groups all solve a similar problem: they allow us to create concurrency in our code so the system is able to run them efficiently. Beyo...
1年前
Manifest 文件
Manifest.xml 文件是重要的配置文件，提供了Android 应用程序的基本信息。 <?xml version='1.0' encoding='utf-8'?> <!--配置清单的开始标记--> <manifest xmlns:android='http://sche...
8个月前
匿名函数
匿名函数：没有名字的函数。 语法 基本语法 val anonymousFunction = fun(parameters): ReturnType { body return statement if needed} 示例代码 val numbers =...
8个月前
Data Class 数据类
Kotlin 中的 数据类（data class） 是一种用于只存数据的类，能够自动生成常用的函数。 equals() hashCode() toString() copy() 语法 data class ClassName( val prop: Type, var prop2: Type )...
7个月前
Docker 部署 Gitlab
5个月前