I’m developing a desktop application using npm create vite@latest and npx tauri init, but when I execute tauri dev, I’m encountering the following error:

I’m developing a desktop application using npm create vite@latest and npx tauri init, but when I execute tauri dev, I’m encountering the following error:

Consider this code

Consider this code

I have a struct, an iterator, and a function that the iterator uses. In the iterator code I have a variable n2 that is calculated each time. This seems unnecessary, n2 only needs to be calculated once, not on each iteration, how do I optimize the code?

I’m trying to store a dyn trait inside Arc<Mutex<Option<Box<>>>>>, however for some reason it won’t work

I’m trying to store a dyn trait inside Arc<Mutex<Option<Box<>>>>>, however for some reason it won’t work

The book says:
We need to set state to None temporarily rather than setting it directly with code like self.state = self.state.request_review(); to get ownership of the state value. This ensures Post can’t use the old state value after we’ve transformed it into a new state.

The book says:
We need to set state to None temporarily rather than setting it directly with code like self.state = self.state.request_review(); to get ownership of the state value. This ensures Post can’t use the old state value after we’ve transformed it into a new state.

I wrote a test case to test references and copies, expecting to get the result of references due to copies, but it was the opposite.