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View gist:38996b3421ff946d6eb00d84fb8ed331
Shibboleths. Add these up and if you have an opinion on five - agreeing *or* disagreeing - we’d love to hear from you. Do these elicit strong feelings? See the note at the bottom.
- You understand discriminated unions, and how to use the type system to enforce exhaustive checks and other useful patterns.
- You can describe good and bad use cases for single page applications.
- You can describe why nullable types and a type system that enforces it are advantageous over type systems like Java’s.
- You can and have extracted declarative implementations out of imperative code. You know when it’s worth it and when it’s not.
use std::path::PathBuf;
use std::collections::{BTreeMap, HashMap, HashSet};
use std::thread;
use std::os::raw::c_void;
use std::rc::Rc;
use std::cell::{Cell, RefCell};
use std::i16;
use std::time::Instant;
use failure::{err_msg, Error};
teamon / box.ex
Created Aug 25, 2017
Define elixir structs with typespec with single line of code
View box.ex
defmodule Box do
defmacro __using__(_env) do
quote do
import Box
@doc """
Define module with struct and typespec, in single line
bsedat / Dockerfile
Last active Aug 1, 2019
Elixir Phoenix Umbrella App + Distillery Multistage Docker Build
View Dockerfile
FROM elixir:1.4.5 as asset-builder-mix-getter
ENV HOME=/opt/app
RUN mix do local.hex --force, local.rebar --force
# Cache elixir deps
COPY config/ $HOME/config/
COPY mix.exs mix.lock $HOME/
COPY apps/myproject_web/mix.exs $HOME/apps/myproject_web/
COPY apps/myproject_web/config/ $HOME/apps/myproject_web/config/
stevedonovan /
Created Apr 14, 2017
An ergonomic way of saying Rc<RefCell>
use std::rc::Rc;
use std::cell::{RefCell,Ref, RefMut};
use std::ops::Deref;
use std::fmt;
struct Shared<T> {
v: Rc<RefCell<T>>
View LazyRoute.tsx
import * as React from "react";
import { observer } from "mobx-react";
import inject from "../store/Inject";
import { addTask } from "../module/task";
import { add, exists, fetch } from "../module/cache"
import { Match, Redirect } from "react-router";
import { default as load } from "../module/load";
import { ApplicationStore } from "../store/ApplicationStore";
import { UserStoreKey, UserStoreStructure } from "../store/UserStore";
kharrison / Country.swift
Last active Aug 17, 2018
Swift Hash Functions
View Country.swift
import Foundation
struct Country {
let name: String
let capital: String
var visited: Bool
extension Country: Equatable {
static func == (lhs: Country, rhs: Country) -> Bool {
mrrooijen / global_register.ex
Created Jan 2, 2017
Ensure that only one instance of a given (supervised) process exists in the cluster.
View global_register.ex
defmodule Party.Clock do
use GenServer
def start_link do
case GenServer.start_link(__MODULE__, [], name: {:global, __MODULE__}) do
{:ok, pid} ->
{:ok, pid}
{:error, {:already_started, pid}} ->
IO.puts("Already started!!")
redrabbit / absinthe_ecto_resolution_schema.ex
Last active Jul 26, 2018
View absinthe_ecto_resolution_schema.ex
defmodule Absinthe.Ecto.Resolution.Schema do
@moduledoc """
This module provides helper functions to resolve a GraphQL query into `Ecto.Query`.
import Absinthe.Resolution.Helpers
import Ecto.Query
alias Absinthe.Resolution
alias Absinthe.Blueprint.Document.Field
shavit / broadcast_udp.swift
Created Nov 14, 2016
Send a message using UDP in Swift 3
View broadcast_udp.swift
//: Playground - noun: a place where people can play
import Cocoa
import Darwin
func htons(value: CUnsignedShort) -> CUnsignedShort {
return (value << 8) + (value >> 8)
let INADDR_ANY = in_addr(s_addr: 0)
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