Nikolay Burlov kohgpat

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

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

	class Rover
	attr_accessor :x, :y

	def initialize(x, y, direction)
	@x = x
	@y = y
	@direction = direction

	@commands = []
	end

	var notify = require('gulp-notify');

	function log() {
	var args = Array.prototype.slice.call(arguments);
	// Send error to notification center with gulp-notify
	notify.onError({
	title: 'Compile Error',
	message: '<%= error %>'
	}).apply(this, args);