jorendorff

changeset:   328391:7ad374f4981c
tag:         tip
user:        Jason Orendorff <[email protected]>
date:        Tue Mar 08 11:40:40 2016 -0600
summary:     Quick follow-up to bug 1254349: Tweak a surviving error message.

diff --git a/js/src/js.msg b/js/src/js.msg
--- a/js/src/js.msg
+++ b/js/src/js.msg
@@ -86,17 +86,17 @@ MSG_DEF(JSMSG_MISSING_FUN_ARG,         2

jorendorff

 — mrrrgn pretty sure she has destructuring with shorthand defaults in the bag https://www.youtube.com/watch?v=cyWWf1Zo28g
4:35 PM <mrrrgn> https://irccloud.mozilla.com/pastebin/PzoPzVgu
4:35 PM — mrrrgn lolz
4:37 PM <sfink> you can't have everything
4:38 PM <mrrrgn> haha
4:41 PM → ricotz joined ([email protected])
4:42 PM <mrrrgn> It's not hopeless. This patch gives us a way to stash errors and continue parsing, and if any slip past there's a nice segfault waiting ^ courtesy MOZ_ASSERT
4:42 PM <shu> you should stash segfaults
4:42 PM <shu> and continue parsing
4:42 PM <mrrrgn> lmao

jorendorff

Lambda and the nature of data

The Three Warnings (50s)

Before we begin, a few warnings.

1. This talk contains code. It contains a lot of code, and you are encouraged to type it in and run it yourself. If you are allergic to code,

jorendorff

enum UIEvent {
    MouseMove(i32, i32),
    MousePress(MouseButton, i32, i32),
    KeyPress(Key, KeyModifiers),
    Render(Graphics)
}

jorendorff

enum RelationshipStatus {
    Single,
    InARelationship,
    Engaged,
    Married,
    ItsComplicated(Option<String>),
    ItsExtremelyComplicated {
        quantities: DifferentialEquation,
        qualities: ImagistPoem
    }

jorendorff

use std::collections::HashMap;

#[derive(Debug)]
enum JSON {
    Null,
    Boolean(bool),
    Number(f64),
    String(String),
    Array(Vec<JSON>),
    Object(HashMap<String, JSON>)

jorendorff

use std::marker::PhantomData;
use std::collections::HashSet;

type GraphId<'a> = PhantomData<::std::cell::Cell<&'a mut ()>>;

struct Graph<'a> {
    id: GraphId<'a>,
    vertices: usize,
    edges: HashSet<(usize, usize)>
}

jorendorff

#!/bin/bash
# rusteval: evaluate a rust expression

set -eu

cd ~/dev/rust-ignorance/playground
rm -rf rusteval
cargo new --bin rusteval --vcs none
cd rusteval
echo "fn main() { println!(\"{:?}\", $@); }" > src/main.rs

jorendorff

    macro_rules! arith {
        ($v1: ident, $v2: ident, $expr: expr) => ({
            let a = read_reg!();
            let b = read_reg!();
            let dest = read_reg!();
            let $v1 = regs[a];
            let $v2 = regs[b];
            regs[dest] = $expr;
        })
    }

jorendorff

# hg-resurrection.sh - Demonstrates a bug in hg rebase that resurrects dead changesets

rm -rf example-repo
mkdir example-repo
cd example-repo

hg init
echo "hello world" > hello.txt
hg add hello.txt
hg commit -m "init"   # changeset 0