aanari

sudo yum update
sudo amazon-linux-extras enable postgresql11
sudo yum install postgresql postgresql-devel

ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

sukima

# Makefile for PlantUML
# Author: Devin Weaver (@sukima) <suki@tritarget.org>
# GistID: 52eacde54bf7861b19ee66a07b864583
#
# This handles SVGs PNGs and ASCII outputs.
# It handles included files with the .iuml extension: !include foo.iuml
# All diagrams have the .uml extension and reside in the diagrams directory
# All output is saved to the output directory
#
# make svg    - (default) build all diagrams as SVGs

joebew42

Visual Studio Code and Elixir

Here I wanted to share my own configuration of Visual Studio Code that I currently use when programming in Elixir. The section about Tasks and Shortcut is taken from this post: Running Elixir Tests in Visual Studio Code/ElixirLS.

Required extensions

• vscode-elixir

Custom tasks

tuannvm

Kubernetes cheatsheet

• Kubernetes cheatsheet
  • Getting Started
  • Sample yaml
  • Workflow
  • Physical components
    • Master
    • Node
• Everything is an object - persistent entities

brianshumate

If you'd like to experiment with Terraform on macOS locally, a great provider for doing so is the Docker provider. You can get set up in a few simple steps, like so:

1. Install Docker

Install Docker for Mac if you have not already.

mmartinson

t = [1,1,2,2,3]

f = fn(n) ->
  IO.puts("starting #{n}")
  :timer.sleep(n * 1000)
  IO.puts("finishing #{n}")
  n
end

tasks = Enum.map(t, fn(n) ->

jamtur01

#!/usr/bin/env bash
set -e

# Formats any *.tf files according to the hashicorp convention
files=$(git diff --cached --name-only)
for f in $files
do
  if [ -e "$f" ] && [[ $f == *.tf ]]; then
    #terraform validate `dirname $f`
    terraform fmt $f

ahmadshah

Soft Delete Ecto Repo

The goal is to support soft delete functionality in Ecto.Repo. With the suggestion by @imranismail, another repo is created and the remaining functionalities are delegate to the original MyApp.Repo.

The new repo get/2 and all/1 functions will exclude the soft deleted record by default. delete/1 and delete_all/1 will update the delete_at column by default instead of deleting.

Example

MyApp.Repo.get(MyApp.User, 1) //will return nil if record is in soft delete state

binarytemple

#!/bin/bash 

SOURCE=/tmp/int.erl
COMPILED=/tmp/int.beam

test -e $SOURCE || curl https://raw.githubusercontent.com/josevalim/otp/c7e82c6b406b632a191c791a1bd2162bde08f692/lib/debugger/src/int.erl > $SOURCE
erlc -o ${COMPILED%int.beam} $SOURCE
chmod 444 $COMPILED
chgrp admin $COMPILED