Juan Macias jmacias

Description

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"

Results

How to use terminal on Windows without going crazy…

Windows is really horrible system for developers and especially for devops. It doesn’t even have a usable terminal and shell, so working with command line is really pain in the ass. If you really don’t want to switch to any usable system (OS X, Linux, BSD…), then this guide should help you to setup somewhat reasonable environment – usable terminal, proper shell, ssh client, git and Sublime Text as a default editor for shell.

Install stuff

Download and install Git for Windows* with:
- [✘] Use Git from the Windows Command Prompt

[✘] Checkout as-is, commit Unix-style line endings

Comparing ES7 and core.async

ES7	core.async
`async function() {...}`	`(fn [] (go ...))`
`await ...`	`(<! ...)`
`await*` or `Promise.all(...)`	`(doseq [c ...] (<! c))`

	;;;; Super top secret talk stuff nobody should ever see. Shhh.

	(in-ns 'user)

	(defmacro bench [& body]
	`((re-find #"\"(.*)\"" (with-out-str (time (do ~@body)))) 1))

	ns

	(require 'clojure.walk)

	(ns example.errors)

	(defn clean-address [params]
	"Ensure (params :address) is present"
	(if (empty? (params :address))
	[nil "Please enter your address"]
	[params nil]))

	(defn clean-email [params]
	"Ensure (params :email) matches @.*"

	;; Datomic example code
	(use '[datomic.api :only (db q) :as d])

	;; ?answer binds a scalar
	(q '[:find ?answer :in ?answer]
	42)

	;; of course you can bind more than one of anything
	(q '[:find ?last ?first :in ?last ?first]
	"Doe" "John")

	<html>
	<head>
	<style type="text/css">
	.slider{
	margin:50px auto;
	width:500px;
	height:300px;
	overflow:hidden;
	position:relative;
	border:5px solid #eaeaea;

	sealed trait Interact[A]

	case class Ask(prompt: String)
	extends Interact[String]

	case class Tell(msg: String)
	extends Interact[Unit]

	trait Monad[M[_]] {
	def pure[A](a: A): M[A]

	(defn upload! [owner]
	(let [form (om/get-node owner "upload-form")
	io (goog.net.IframeIo.)]
	(goog.events.listen
	io goog.net.EventType.COMPLETE #(js/console.log "COMPLETE"))
	(goog.events.listen
	io goog.net.EventType.SUCCESS (fn [_]
	(put!
	(om/get-state owner :reset-file-drop)
	true)

	(ns datatable.core
	(:require [reagent.core :as reagent]
	[cljsjs.fixed-data-table]))

	(def Table (reagent/adapt-react-class js/FixedDataTable.Table))
	(def Column (reagent/adapt-react-class js/FixedDataTable.Column))

	(defn gen-table
	"Generate `size` rows vector of 4 columns vectors to mock up the table."
	[size]