zakariaf

Rails 7 new features. Before and After

• Add ComparisonValidator
• PostgreSQL generated columns
• PostgreSQL custom enum types
• Add tracking of belongs_to association
• association_previously_changed? method
• Add invert_where method
• Add associated method
• Add missing method
• Active Record Encryption

julienma

The dokku-push action requires an SSH key with push access to the Dokku instance. Here's how to do that.

Replace APPNAME with the name of the app (e.g. this is a good idea to use the same name used on Dokku's).

Generate a new SSH keypair

We want each repo to have its own SSH key, so it's easier to rotate/invalidate them if required, without affecting all the repos. Let's generate a new key on your computer (see GitHub help):

dhh

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers

charlesroper

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

julienma

-- Script for DEVONthink 3
-- Run OCRmyPDF on PDFs without OCR
-- Requires https://github.com/jbarlow83/OCRmyPDF to be installed e.g. with brew

on performSmartRule(theRecords)
	tell application id "DNtp"
		set strExportPath to "PATH=/opt/homebrew/bin:$PATH "
		set intRecordsCount to count of theRecords
		show progress indicator "Adding OCR to PDF..." steps intRecordsCount
		repeat with theRecord in theRecords

julienma

Sinatra & Web Development Cheat Sheet

This is a cheat sheet I developed for students while teaching an Intro to Web Development course through Lighthouse Labs. If you're interested in learning to code, you should definitely check them out.

Table of Contents

1. HTML
   • Basic page structure
   • Formatting tags

• Content tags

systemed

(Dijkstra and plain A* are generally not included here as there are thousands of 
implementations, though I've made an exception for rare Ruby and Crystal versions,
and for Thor, Mapzen's enhanced A*. )

A*                                      Ruby    https://github.com/georgian-se/shortest-path
A*                                      Crystal https://github.com/petoem/a-star.cr
A* (bidirectional with shortcuts)       C++     https://github.com/valhalla/valhalla
NBA*                                    JS      https://github.com/anvaka/ngraph.path
NBA*                                    Java    https://github.com/coderodde/GraphSearchPal
NBA*                                    Java    https://github.com/coderodde/FunkyPathfinding

d2s

Fix Ubuntu package cache

Had problem with Ubuntu package cache.

➜  sources.list.d sudo apt-get update                   
Hit:1 http://fi.archive.ubuntu.com/ubuntu xenial InRelease
Hit:2 http://fi.archive.ubuntu.com/ubuntu xenial-updates InRelease                                                                   
Hit:3 http://fi.archive.ubuntu.com/ubuntu xenial-backports InRelease                                                                 
Hit:4 http://security.ubuntu.com/ubuntu xenial-security InRelease

jedireza

Let’s Encrypt + Heroku

Step 1: Setup certificate

$ sudo letsencrypt certonly --manual -d <domain>

You'll need to deploy a verification file to your current website.

fiftin

1. Dump the data only sql to file
  $ pg_dump --data-only --inserts YOUR_DB_NAME > dump.sql
2. scp to local

3. Remove the SET statements at the top
  such as:
    SET statement_timeout = 0;
    SET client_encoding = 'SQL_ASCII';

4. Remove the setval sequence queries