I am looking for the best way to go from String
to Windows<T>
using the windows
function provided for slices.
I understand how to use windows this way:
fn main() {
let tst = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
let mut windows = tst.windows(3);
// prints ['a', 'b', 'c']
println!("{:?}", windows.next().unwrap());
// prints ['b', 'c', 'd']
println!("{:?}", windows.next().unwrap());
// etc...
}
But I am a bit lost when working this problem:
fn main() {
let tst = String::from("abcdefg");
let inter = ? //somehow create slice of character from tst
let mut windows = inter.windows(3);
// prints ['a', 'b', 'c']
println!("{:?}", windows.next().unwrap());
// prints ['b', 'c', 'd']
println!("{:?}", windows.next().unwrap());
// etc...
}
Essentially, I am looking for how to convert a string into a char slice that I can use the window method with.
This solution will work for your purpose. (playground)
fn main() {
let tst = String::from("abcdefg");
let inter = tst.chars().collect::<Vec<char>>();
let mut windows = inter.windows(3);
// prints ['a', 'b', 'c']
println!("{:?}", windows.next().unwrap());
// prints ['b', 'c', 'd']
println!("{:?}", windows.next().unwrap());
// etc...
println!("{:?}", windows.next().unwrap());
}
String can iterate over its chars, but it's not a slice, so you have to collect it into a vec, which then coerces into a slice.