Skip to content

Instantly share code, notes, and snippets.

View ghoshnirmalya's full-sized avatar
Enjoying!

Nirmalya Ghosh ghoshnirmalya

Enjoying!
View GitHub Profile

POSTGRESQL CHEATSHEET

Basic commands

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
@bvaughn
bvaughn / index.md
Last active April 3, 2024 07:41
Interaction tracing with React

This API was removed in React 17


Interaction tracing with React

React recently introduced an experimental profiler API. After discussing this API with several teams at Facebook, one common piece of feedback was that the performance information would be more useful if it could be associated with the events that caused the application to render (e.g. button click, XHR response). Tracing these events (or "interactions") would enable more powerful tooling to be built around the timing information, capable of answering questions like "What caused this really slow commit?" or "How long does it typically take for this interaction to update the DOM?".

With version 16.4.3, React added experimental support for this tracing by way of a new NPM package, scheduler. However the public API for this package is not yet finalized and will likely change with upcoming minor releases, so it should be used with caution.

@nikneroz
nikneroz / Phoenix JWT.md
Last active October 13, 2019 10:16
Elixir + Phoenix Framework 1.3 + Guardian + JWT(Refresh, Revoke, Recover) + Comeonin

Elixir + Phoenix Framework 1.3 + Guardian + JWT(Refresh, Revoke, Recover) + Comeonin

User model bootstrap

Let's generate User model and controller.

mix ecto.create
mix phoenix.gen.json Accounts User users email:string password_hash:string
@nikneroz
nikneroz / Guardian JWT.md
Last active October 10, 2023 19:13
Elixir + Phoenix Framework + Guardian + JWT. This is tutorial and step by step installation guide.

Elixir + Phoenix Framework + Guardian + JWT + Comeonin

Preparing environment

We need to generate secret key for development environment.

mix phoenix.gen.secret
# ednkXywWll1d2svDEpbA39R5kfkc9l96j0+u7A8MgKM+pbwbeDsuYB8MP2WUW1hf

Let's generate User model and controller.

@dcarneiro
dcarneiro / sagas.js
Last active November 9, 2023 12:21
connect redux-saga to phoenix channel
function* connectToSocket(url) {
const socket = new Socket(socketBaseUrl() + url, { params: { token: 'your-auth-token' } });
socket.connect();
return socket;
}
// channel.join is async, this is probably an error
function* joinChannel(socket, channel_name) {
const channel = socket.channel(channel_name, {});
channel.join();
@ankurk91
ankurk91 / github_gpg_key.md
Last active June 7, 2024 14:31
Signing git commits using GPG (Ubuntu/Mac)

Github : Signing commits using GPG (Ubuntu/Mac) 🔐

  • Do you have an Github account ? If not create one.
  • Install required tools
  • Latest Git Client
  • gpg tools
# Ubuntu
sudo apt-get install gpa seahorse
# MacOS with https://brew.sh/
@danieleggert
danieleggert / GPG and git on macOS.md
Last active June 6, 2024 09:29
How to set up git to use the GPG Suite

GPG and git on macOS

Setup

No need for homebrew or anything like that. Works with https://www.git-tower.com and the command line.

  1. Install https://gpgtools.org -- I'd suggest to do a customized install and deselect GPGMail.
  2. Create or import a key -- see below for https://keybase.io
  3. Run gpg --list-secret-keys and look for sec, use the key ID for the next step
  4. Configure git to use GPG -- replace the key with the one from gpg --list-secret-keys
@maxivak
maxivak / 00.md
Last active May 23, 2024 13:24
Sending emails with ActionMailer and Sidekiq

Sending emails with ActionMailer and Sidekiq

Send email asynchroniously using Sidekiq.

ActionMailer

Create your mailer us usual:

@kottenator
kottenator / simple-pagination.js
Created July 13, 2015 20:44
Simple pagination algorithm
// Implementation in ES6
function pagination(c, m) {
var current = c,
last = m,
delta = 2,
left = current - delta,
right = current + delta + 1,
range = [],
rangeWithDots = [],
l;
require 'rails_helper'
RSpec.describe TodosController, :type => :controller do
describe "GET #index" do
#describe "POST #create" do
#describe "GET #show" do
#describe "PATCH #update" do (or PUT #update)
#describe "DELETE #destroy" do
#describe "GET #new" do