Neeraj Kanhere neerajkanhere

Summary of book "Clean Architecture" by Robert C. Martin

Uncle Bob, the well known author of Clean Code, is coming back to us with a new book called Clean Architecture which wants to take a larger view on how to create software.

Even if Clean Code is one of the major book around OOP and code design (mainly by presenting the SOLID principles), I was not totally impressed by the book.

Clean Architecture leaves me with the same feeling, even if it's pushing the development world to do better, has some good stories and present robust principles to build software.

The book is build around 34 chapters organised in chapters.

List all Git repository objects by size

Summary
Example

Summary

Bash script which will:

Iterate all commits made within a Git repository.

Useful Examples of ffmpeg and GNU parallel on the command-line:

Transcoding FLAC music to Opus:

ffmpeg is a highly useful application for converting music and videos. However, audio transcoding is limited to a a single core. If you have a large FLAC archive and you wanted to compress it into the efficient Opus codec, it would take forever with the fastest processor to complete, unless you were to take advantage of all cores in your CPU.

parallel 'ffmpeg -v 0 -i "{}" -c:a libopus -b:a 128k "{.}.opus"' ::: $(find -type f -name '*.flac')

Transcoding Videos to VP9:

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

	// This is my es6 re-write of the fiddle below.
	// http://jsfiddle.net/cferdinandi/nb40j6rf/6/?mc_cid=1d481e891a&mc_eid=a3f6fd745a
	// still a working progress but here is a live example:
	// https://repl.it/@iamwill123/Creating-components-with-es6-vanilla-javascript-Reactive-UI

	/**
	* A vanilla JS helper for creating state-based components
	* @param {String\|Node} elem The element to make into a component
	* @param {Object} options The component options
	*/

	/* Allocate aligned memory in a portable way.
	*
	* Memory allocated with aligned alloc MUST be freed using aligned_free.
	*
	* @param alignment The number of bytes to which memory must be aligned. This
	* value must be <= 255.
	* @param bytes The number of bytes to allocate.
	* @param zero If true, the returned memory will be zeroed. If false, the
	* contents of the returned memory are undefined.
	* @returns A pointer to `size` bytes of memory, aligned to an `alignment`-byte

	Prerequisties install:
	- sudo apt-get install build-essential checkinstall

	These are the dependancies required by python:
	- sudo apt-get install libbz2-dev libc6-dev libgdbm-dev libncursesw5-dev libreadline-gplv2-dev libssl-dev libsqlite3-dev tk-dev

	Download the tar source file from python.org (at the time of writing 3.6.1 is the latest release):
	- wget -O ~/Downloads/python3.6.1.tgz https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz

	Via command line navigate to the downloaded file directory:

	#ifndef _POLYNOMIAL_REGRESSION_H
	#define _POLYNOMIAL_REGRESSION_H __POLYNOMIAL_REGRESSION_H
	/**
	* PURPOSE:
	*
	* Polynomial Regression aims to fit a non-linear relationship to a set of
	* points. It approximates this by solving a series of linear equations using
	* a least-squares approach.
	*
	* We can model the expected value y as an nth degree polynomial, yielding

	//
	// Debug Helpers
	//
	// Copyright (c) 2015 - 2017 Sean Farrell <[email protected]>
	//
	// Permission is hereby granted, free of charge, to any person obtaining a copy
	// of this software and associated documentation files (the "Software"), to deal
	// in the Software without restriction, including without limitation the rights
	// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	// copies of the Software, and to permit persons to whom the Software is