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

slashdotdash

def wait_until(timeout \\ 1_000, fun)

def wait_until(0, fun), do: fun.()

def wait_until(timeout, fun) do
  fun.()
rescue
  ExUnit.AssertionError ->
    :timer.sleep(10)

progfolio

Spacemacs-like menus using general.el

Global keybindings

First, we define a global prefix key:

(general-create-definer global-definer
  :keymaps 'override
  :states  '(insert emacs normal hybrid motion visual operator)
  :prefix  "SPC"
  :non-normal-prefix "S-SPC")

madkoding

Pairing Bluetooth Devices in Dual Boot with Linux Ubuntu and Windows 10/11

Introduction

This guide provides updated instructions for pairing Bluetooth devices (such as keyboards or mice) in a dual-boot environment with Linux Ubuntu and Windows 10/11, incorporating community feedback and suggestions.

Instructions

1. Pair in Linux First

• Pair your Bluetooth device in Linux. This is crucial to ensure the LinkKey remains consistent.
• Note: Do not re-pair the device in Linux after completing the pairing in Windows.

pmarreck

# How to run Ecto migrations from IEx console... Examples

# preliminaries assumed in the following code, change to fit your environment:
alias YourAppName.Repo
your_app_name_as_atom = :mpnetwork
downto_version = 20170724182558

# Down:
Ecto.Migrator.run(Repo, "priv/repo/migrations/", :down, [to: downto_version])

somebox

Domain-Driven Desire: The Talk from Øredev 2016

🎥 https://vimeo.com/191051851

Links and References

Thanks for watching my talk, Domain-Driven Desire at Øredev 2016. Here's a list of resources that inspired me, and will hopefully inspire you:

Videos

tvlooy

#!/bin/bash

function test {
    MESSAGE=$1
    RECEIVED=$2
    EXPECTED=$3

    if [ "$RECEIVED" = "$EXPECTED" ]; then
        echo -e "\033[32m✔︎ Tested $MESSAGE"
    else

bergerjac

# debugging
save_and_open_page
puts page.body
puts find("#id").native
puts first("#id .class element").native

# navigating
visit('/projects')
visit(post_comments_path(post))
 

jaceklaskowski

Rough Notes about CQRS and ES

Once upon a time…

I once took notes (almost sentence by sentence with not much editing) about the architectural design concepts - Command and Query Responsibility Segregation (CQRS) and Event Sourcing (ES) - from a presentation of Greg Young and published it as a gist (with the times when a given sentence was heard).

I then found other summaries of the talk and the gist has since been growing up. See the revisions to know the changes and where they came from (aka the sources).

It seems inevitable to throw Domain Driven Design (DDD) in to the mix.

itskingori

# As used with CanCan and Devise
class ApplicationController < ActionController::Base
  protect_from_forgery

  include ErrorResponseActions

  rescue_from CanCan::AccessDenied, :with => :authorization_error
  rescue_from ActiveRecord::RecordNotFound, :with => :resource_not_found

  before_filter :authenticate!