TylerPachal

def join_game(user_id, game_id) do
  with {:user, {:ok, user}} <- {:user, Users.get(user_id)}, 
       {:game, {:ok, game}} <- {:game, Games.get(game_id)},
       {:full, false}       <- {:full, Game.is_full?(game)},
       {:started, false}    <- {:started, Game.is_started?(game)},
       {:allowed, true}     <- {:allowed, User.has_permission?(user, game)}
do
  Game.add_user(game, user)
else
  {:user, :not_found} -> {:error, "User not found"}

swalkinshaw

Moved to Shopify/graphql-design-tutorial

slavafomin

Git submodules best practices

Useful commands

— Clone repository with submodules automatically:

git clone --recursive git@github.com:name/repo.git

— Initialize submodules after regular cloning:

heron2014

Visual instructions how to enable Google Maps on IOS using react-native-maps

UPDATE: Following instructions are now a year old. I have recently managed to upgrade react-native-maps from 0.17 to the latest version 0.21 with react-native 0.51 - if you want to follow my instruction scroll down to the end this doc! Hope that will work for you too!

This is for my personal use, things might not be correctly explained here. For the official docs please check https://github.com/airbnb/react-native-maps

Steps from scratch:

1.react-native init GoogleMapPlayground

martinaglv

function whatDoesItDo(val){

    return val ? 1 : 2;

}