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This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
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defmodule MyBlog.Repo.Migrations.CreatePost do | |
use Ecto.Migration | |
def change do | |
create table(:posts, primary_key: false) do | |
add :id, :uuid, primary_key: true | |
add :body, :string | |
add :word_count, :integer | |
timestamps |