Looks like a good starter Rust project. I am learning Rust and every bit of such blog helps.
Just curious to see a .. syntax here: (row..row + count). What does it mean?
Here's the reference for the drain() method on vectors which takes the range argument: https://doc.rust-lang.org/rust-by-example/flow_control/for.h...
Altogether, it sounds like (I haven't read the whole thing) it's supposed to drain from the current row until the end, including every row in between.
let strings = ["foo", "bar", "baz"];
let slice = &strings[0..2];
// prints "foo" and "bar"
for s in slice {
println!("{}", s);
}
// prints 0, 1, 2, 3, and 4
for i in 0..5 {
println!("{}", i);
}