hollow nova
So far I have only been able to accomplish this with these two lines:
let lines: Vec<String> = reader.lines().map(|line| line.unwrap()).collect();
let lines: Vec<&str> = lines.iter().map(|s| s.as_str()).collect();
If I try to do the as_str() in the first line, I get a compiler error that I'm trying to return a value referencing a temporary value even if I clone after unwraping.
tawny totem
So far I have only been able to accomplish this with these two lines:
```rust
...
The easiest way is to just read the whole file into one String, and then use str::lines, e.g. ```rs
let contents: String = {
let mut buf = String::new();
reader.read_to_string(&mut buf).unwrap();
buf
}; // or just let contents = std::fs::read_to_string(filename).unwrap();
let lines: Vec<&str> = contents.lines().collect();
The &strs in lines will reference contents, so contents cannot be moved or accessed mutably until you're done with lines.