gigamonkey

Crockford: One of the things I’ve been pushing is code reading. I think that is the most useful thing that a community of programmers can do for each other—spend time on a regular basis reading each other’s code. There’s a tendency in project management just to let the programmers go off independently and then we have the big merge and if it builds then we ship it and we’re done and we forget about it.

One of the consequences of that is that if you have weak or confused programmers you’re not aware of their actual situation until much too late. And so the risks to the project, that you’re going to have to build with stuff that’s bad and the delays that that causes, that’s unacceptable. The other thing is that you may have brilliant programmers on the project who are not adequately mentoring the other people on the team. Code reading solves both of those problems.

Seibel: Can you talk a bit about how you conduct a code reading?

Crockford: At each meeting, someone’s responsible for reading their code,

gigamonkey

import static java.lang.Math.sqrt;
import static java.util.stream.IntStream.range;
import static java.util.stream.IntStream.rangeClosed;

public class Primes {

  public boolean isPrime(int n) {
    return n > 1 && !rangeClosed(2, (int) sqrt(n)).anyMatch(d -> n % d == 0);
  }

gigamonkey

import static java.util.stream.Collectors.joining;

import java.io.*;
import java.nio.file.*;
import java.util.*;
import java.util.stream.*;

public record Reviewers(List<String> handles) {
  //////////////////////////////////////////////////////////////////////////////
  // Utility methods

gigamonkey

import java.util.*;
import java.util.function.*;

public class Lift {

  public static interface Expression {
    public Optional<Double> evaluate();
  }

  // This is a higher-order function that takes a function (i.e. an istance of a

gigamonkey

import java.util.Scanner;

public class TwentyQuestions  {

  public static final String[] GUESSES = {
    "a hamster",
    "a ferret",
    "a dog",
    "a cat",
    "an elephant",

gigamonkey

import java.util.ArrayList;
import java.util.List;
import java.util.function.Predicate;

public class Sexps {

  // Thing that can be evaluated.
  public static interface Expression {
    public double evaluate();
  }

gigamonkey

Trying to understand OAuth

Here’s my basic understanding of how to do client-side OAuth, meaning we want JavaScript running in the browser to be able to authenticate to a service (e.g., GitHub) and then access that service directly from the browser. The key security requirement is that the client-side JavaScript can’t know the client secret because the whole point of secrets as that they be secret. Assume in what follows that our web server is running on example.com. Also note that all these requests should be over HTTPS.

gigamonkey

import Database from 'better-sqlite3';
import { argv } from 'process';
import fs from 'fs';

/*
 * The kind of queries we support.
 */
const kinds = {
  // Execute SQL, returns { changes, lastInsertRowId } object.
  run: () => (stmt) => (...args) => stmt.run(...args),

gigamonkey

#!/usr/bin/env python

"""
Find times to hold the CSA Zoom meeting based on when people said they could do it.
Given a number N, find the N times that maximize the number of people who can come.
"""

from datetime import datetime
from functools import reduce
import json

gigamonkey

// Some utility functions

const distance = (a, b) => Math.abs(a - b);

const distance2d = (p1, p2) => Math.hypot(p1.x - p2.x, p1.y - p2.y);

const clamp = (n, min, max) => (n < min ? min : n > max ? max : n);

const nextPos = (b) => ({ x: b.x + b.dx, y: b.y + b.dy });