joshnuss

# Preloading usually required an extra query.
# To do it in one query, a `join` is needed, and the call to `preload` needs to know the name of join
# This macro does both the `join` and `preload` together
defmodule Preloader do
  import Ecto, only: [assoc: 2]
  alias Ecto.Query.Builder.{Join, Preload}

  defmacro preload_join(query, association) do
    expr = quote do: assoc(l, unquote(association))
    binding = quote do: [l]

skrajewski

#!/bin/bash

PID_FILE=~/.restic_backup.pid
TIMESTAMP_FILE=~/.restic_backup_timestamp

if [ -f "$PID_FILE" ]; then
  if ps -p $(cat $PID_FILE) > /dev/null; then
    echo $(date +"%Y-%m-%d %T") "File $PID_FILE exist. Probably backup is already in progress."
    exit 1
  else

PJUllrich

Big-O Time Complexities for Elixir data structures

Map [1]

Operation	Time Complexity
Access	O(log n)
Search	O(log n)
Insertion	O(n) for <= 32 elements, O(log n) for > 32 elements [2]
Deletion	O(n) for <= 32 elements, O(log n) for > 32 elements