pub struct Stack<T> {
items: Vec<T>,
}
impl<T> Default for Stack<T> {
fn default() -> Self {
Self { items: Default::default() }
}
}
impl<T> Stack<T> {
pub fn pop(&mut self) -> T {
let result = self.items.pop();
result.expect("Tried to pop, but the stack was empty. This indicates a bug where an item is being popped, but not pushed to the stack.")
}
pub fn push(&mut self, item: T) {
self.items.push(item);
}
pub fn peek(&self) -> Option<&T> {
self.items.last()
}
pub fn iter(&self) -> impl Iterator<Item = &T> {
self.items.iter().rev()
}
}