ios - FileManager.fileExistsAtPath 在 FileManager.removeItem 之前？

Question

在 iOS 中，确保文件在删除之前存在是一种好习惯，还是继续尝试删除可能存在或可能不存在的文件并让错误在 catch block 中静默失败是否可以？ ？

我正在遍历大量要删除的本地文件，其中大约 10% 可能不存在。

Answer 1

来自apple documentation对于 fileExistsAtPath: 方法:

Attempting to predicate behavior based on the current state of the file system or a particular file on the file system is not recommended. Doing so can cause odd behavior or race conditions. It’s far better to attempt an operation (such as loading a file or creating a directory), check for errors, and handle those errors gracefully than it is to try to figure out ahead of time whether the operation will succeed.