排序
How to handle concurrency errors in unit tests 如何处理单元测试中的并发错误
Both Swift Testing and XCTest give us three main options for handling errors in tests: we can consider them immediate failures, we can handle them internally and make our own asser...
1年前
How to manipulate an AsyncSequence using map(), filter(), and more 如何使用 map()、filter() 等作 AsyncSequence
AsyncSequence has implementations of many of the same methods that come with Sequence, but how they operate varies: some return a single value that fulfills you...
1年前Is it efficient to create many tasks? 创建许多任务是否有效？
Previously I talked about the concept of thread explosion, which is when you create many more threads than CPU cores and the system struggles to manage them effectively. Howev...
1年前How to cancel a task group 如何取消任务组
Swift’s task groups can be cancelled in one of three ways: if the parent task of the task group is cancelled, if you explicitly call cancelAll() on the group, or if one of your ...
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 make a task sleep 如何使任务进入休眠状态
Swift’s Task struct has a static sleep() method that will cause the current task to be suspended for a set period of time. You need to call Task.sleep()&n...
1年前What are tasks and task groups? 什么是任务和任务组？
Using async/await in Swift allows us to write asynchronous code that is easy to read and understand, but by itself it doesn’t enable us to run anything concurrently – even w...
1年前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