No method named `as_bytes` found for struct `Vec<&str>` in the current scope

            let mut world_tiles = vec!["null"];

            world_tiles[0] = "*";

            for i in 1..1000000 {

            let mut layer_path = format!("saves/{}/layer_150.txt",name.trim());

            let mut world_file = File::create(layer_path).expect("Uh oh");
            world_file.write_all(world_tiles.as_bytes()).expect("Uh Oh....");

as_bytes is on str, not on Vec.

How do i write a vec to a .txtx file then?

for tile in &world_tiles {
    world_file.write_all(tile.as_bytes()).expect("Uh Oh....");


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