axelbdt

from PyPDF2 import PdfWriter, PdfReader

reader = PdfReader('Elixir in Action.pdf')
writer = PdfWriter()

A4_WIDTH = 7.36
A4_HEIGHT = 9.23

page = reader.pages[0]

axelbdt

(ns com.yakread.report.dashboards
  (:require [com.biffweb :as biff]
            [clojure.string :as str]
            [cheshire.core :as cheshire]))

(defn debug [x]
  [:pre (with-out-str (biff/pprint x))])

;; slight modification of clojure.core/distinct
(defn distinct-by

axelbdt

How to Install asdf with Nix Home-manager

1. First, add asdf to the Nix configuration with the package named asdf-vm. Add the following line to your configuration.nix file:

   environment.systemPackages = with pkgs; [
     asdf-vm
   ];

axelbdt

Zero to Catlab with Julia

Install Julia

https://julialang.org/downloads/

or via package manager :

sudo apt install julia

axelbdt

How to set up BQN keyboard layout on GNOME

Download the XKB configuration for bqn here, and place it whith the other layouts:

curl https://raw.githubusercontent.com/mlochbaum/BQN/master/editors/bqn
cp bqn /usr/share/X11/xkb/symbols/

Add an entry for BQN in evdev.xml

axelbdt

Django and PostgreSQL 15, the rules have changed

Postgres 15 is just out, and while there is a lot to love about this new release, you're in for a surprise if you try to set it up with Django following tutorials like this one.

The reason is stated in the release announcement:

Remove PUBLIC creation permission on the public schema (Noah Misch) The new default is one of the secure schema usage patterns that Section 5.9.6 has recommended...

Provided your web app doesn't access your database as a superuser (it shouldn't) and uses a dedicated user, it is not allowed to use the public schema anymore. You have to create one for this specific user, and the next section will