stevenblenkinsop

type RenderData = u32;

struct Manager {
    num_entities: usize,
    render_data: Vec<Option<RenderData>>
}

pub fn main() {

    let mut entity_manager = Manager {

stevenblenkinsop

#![feature(fnbox)]

use std::ops::Mul;

pub mod hkt {
    pub trait HktAt<T> {
        type Out: HasHkt<Hkt=Self, Arg=T>;
    }
    
    pub trait HasHkt {

stevenblenkinsop

use std::ops::Mul;

pub mod hkt {
    pub trait HktAt<T> {
        type Out: HasHkt<Hkt=Self, Arg=T>;
    }
    
    pub trait HasHkt {
        type Arg;
        type Hkt: HktAt<Self::Arg, Out=Self>;

stevenblenkinsop

#![allow(dead_code)]

macro_rules! pipe {
    ((); $e:expr; $($args:tt)*) => ($e);
    (($m:ident | $($ms:ident)|+) ; $($args:tt)*) => ($m!(($($ms)|+) ; $($args)*));
    (($m:ident) ; $($args:tt)*) => ($m!((); $($args)*));
    ($($ms:ident)|*) => (pipe!(($($ms)|*);));
}

macro_rules! zero {

stevenblenkinsop

#![allow(dead_code)]

macro_rules! pipe {
    ((); $e:expr; $($args:tt)*) => ($e);
    (($m:ident | $($ms:ident)|+) ; $($args:tt)*) => ($m!(($($ms)|+) ; $($args)*));
    (($m:ident) ; $($args:tt)*) => ($m!((); $($args)*));
    ($($ms:ident)|*) => (pipe!(($($ms)|*);));
}

macro_rules! incr {

stevenblenkinsop

use std::collections::hash_map::HashMap;
use std::cell::Cell;

#[deriving(Show)]
struct Adder<'a>(&'a Cell<uint>);

impl <'a> Adder<'a> {
    fn add(&mut self, i: uint) {
        let &Adder(cell) = self;
        cell.set(cell.get() + i);