anka-213

#![feature(trace_macros)]
trace_macros!(true);

/// Piano numbers
#[derive(Debug)]
struct S<T>(T);

trait ToInt {fn to_int(self) -> i32;}

impl ToInt for i32 {fn to_int(self) -> i32 {self}}

anka-213

use std::mem::{replace};

#[derive(Clone, Debug)]
struct HasDrop(i32);

impl Drop for HasDrop {
    fn drop(&mut self) {
        println!("Dropping {}!", self.0);
    }
}

anka-213

#![feature(trace_macros)]
#![feature(log_syntax)]
//trace_macros!(true);


macro_rules! id {($e : expr) => ($e)}

macro_rules! vecc {($($t:tt)*) => (Vecc{v:vec!($($t)*)})}

macro_rules! mdo {

anka-213

fn main() {
    use std::borrow::Cow;
    
    #[allow(dead_code)]
    fn abs_all(input: &mut Cow<[i32]>) {
        for i in 0..input.len() {
            let v = input[i];
            if v < 0 {
                // clones into a vector the first time (if not already owned)
                input.to_mut()[i] = -v;

anka-213

use std::borrow::Cow;
use std::sync::Arc;

fn fizz_buzz(i: i32) -> Cow<'static, str> {
    if i % 15 == 0 {
        "FizzBuzz".into()
    } else if i % 5 == 0 {
        "Buzz".into()
    } else if i % 3 == 0 {
        "Fizz".into()

anka-213

use std::iter::FromIterator;

enum List { Nil, Cons{value: i32, next: Box<List>}}

fn main() {
    let v = vec![1, 5, 3, 8, 12, 56, 1230, 2, 1];

    //let root: List = v.iter().cloned().collect();
    let root = List::from_iter(v);

anka-213

#![feature(trace_macros)]
#![feature(log_syntax)]
//trace_macros!(true);


macro_rules! id {($e : expr) => ($e)}

macro_rules! vecc {($($t:tt)*) => (Vecc{v:vec!($($t)*)})}

macro_rules! mdo {

anka-213

#![allow(dead_code, unused_variables)]

struct PrimeList {
    primes: Vec<i32>,
}

/// Basically the same as 
/// self.primes.iter().cloned().chain(self) on a PrimeList
struct PrimeIter<'a> {
    primes: &'a mut PrimeList,