Leonidas Savvides Blog

Tech Links [ Computers Programming Russian ] – No Comment!

https://www.dell.com/en-us/work/shop/cty/sf/precision-desktops

https://www.nvidia.com/en-us/design-visualization/solutions/vr-ready-systems/

https://www.rankingthebrands.com/The-Brand-Rankings.aspx?rankingID=203&year=1048

https://www8.hp.com/us/en/solutions/vr-commercial.html

https://us.msi.com/Workstations

https://www.asus.com/ru/Laptops/ZenBook-Series-Home/

https://docs.microsoft.com/en-us/windows/release-information/

https://www.ubuntushop.be/index.php/en/overzicht-notebooks.html

https://www.digitalstorm.com/dslabs/top10.asp

https://www.boxx.com/

https://system76.com/

https://lambdalabs.com/deep-learning/workstations/4-gpu/customize

https://www.workstation4u.de/

https://www.originpc.com/

https://www.samsung.com/gr/smartphones/galaxy-a71-a715/SM-A715FZBUEUR/

---

https://www.howtogeek.com/213145/how-to%C2%A0convert-a-physical-windows-or-linux-pc-to-a-virtual-machine/

https://sourcemaking.com/design_patterns

10 Best PHP Framework for Enterprise Application

How to build a PC: The Tech Report guide

http://echo.msk.ru/sounds/stream.html

https://russianpodcast.eu/

New Site www.paphos.city

THE PAPHOS MARKETPLACE

BUY/SELL Cyprus Wide

If Your OLD PC CPU can Not run Vmware Player … ( cpu older than 2010 ) do Not give up try…

Then you can try install Virtual Box from Oracle…

Success worked

PC supports Visualization but CPU very old to install Vmware Player so installed Virtual Box …

For Questions email me

w3m wttr.in/London

================================

EXIT BY PRESSING

Q

Y/n   Y

================================

SEE SCREENSHOT HERE >>>>

https://lse-blogs.s3-eu-west-1.amazonaws.com/personal/2019-08-19_07-46-46-London-wttr-in.png

 

 

Send SMS with Python 3 & Twilio.com

==========================================

 

If you wanted in your PHP web site or Python Program, send SMS you can follow below :

https://www.twilio.com/docs/sms/quickstart/php

https://www.twilio.com/docs/sms/tutorials/how-to-send-sms-messages-python

https://lse-blogs.s3-eu-west-1.amazonaws.com/personal/SMS-Python3-Twilio-provider.zip

The latter zip file is a complete Python program – when you press switch [press space bar emulated here] eg Enter a PC Lab room the switch turn True… then recorded in TXT file the date/time entered, appear on the Pygame window this time, and an SMS sent to your Mobile.

Requirements

1

Trial Free Twilio account – a limit on free SMS

2

Twilio credentials lines 15-16

# Your Account Sid and Auth Token from twilio.com/console
# DANGER! This is insecure. See http://twil.io/secure
account_sid = ”
auth_token = ”

3

Twilio Telephone number provided by Twilio account and your own mobile number [SMS delivered]  lines 70-71

from_=’+11234567890′, # personal Twilio account telephone number
to=’+11234567890′ # your number – notified / delivered the SMS

 

if you need help contact me

LSE

 

Linux Distributions with most pre installed Software/Apps/Games

===============================

Coming Soon !

For Now Check Out / Googling

1. Ubuntu Studio OS – Creators Distro
2. Zorin OS Educational – Educational/Student Distro
3. Debian – Raspbian OS for PCs and Macs – Educational/Programming/Projects w/ Pi Distro

========================================

Useful Composer PHP 7 Package Manager Commands

==========================

 

Composer is fairly easy to update, just run this command:
composer self-update

Composer works by using the configuration in a file called composer.json, where you can
outline external dependencies and your autoloading style. Once Composer has installed
dependencies listed in this file, it writes a composer.lock file that details the exact
versions it has installed. When using version control it is important that you commit this file
(alongside the composer.json file), don’t add it to your .gitignore file if you’re on Git.
This is very important because the lock file details the exact version of a package that was
installed at a particular time in your version control system. You can, however, exclude a
directory called vendor,

So now we can add the following markup to the composer.json file:

{
  "autoload": {
    "psr-4": {
      "IcyApril\\ChapterOne": "src/"
    }
  }
}
So let me explain what this file does; it tells Composer to autoload everything in the

So, the next step is to create our src directory where we include the code we want to
autoload. Done that? Right, now let's open up our command line and move into the
directory where we've put our composer.json file.
In order to install everything in the composer.json file in your project just run the
composer install command. For subsequent updates, the composer update command
will update to the latest versions of all dependencies as defined in composer.json. If you
don't want to do this, though, there is an alternative; running the composer dump-autoload
command will solely regenerate the list of the PSR-0/PSR-4 classes that need to
be included in the project (for example, you add, delete, or rename some of your classes).
Now let me cover how you will actually go about creating a class. So, let's create an src
directory in our project and in that src directory create a new class called Book. You can do
this by creating a file called Book.php. In that file, add something like this:

<?php
namespace IcyApril\ChapterOne;

class Book
{
  public function __construct()
  {
    echo "Hello world!";
  }
}


?>

The line after you put in your PHP opening tag, we need to pull in our autoloader script:
require_once('vendor/autoload.php');

Then we can instantiate our Book class:
new \IcyApril\ChapterOne\Book();

Addition and Multiplication of Matrix in Python 3

=========

m1 = [[1,2,3],[4,5,6],[7,8,9],[10,11,12]]

Symbolic Links building & Extracting zip keeping perm origin

============

1

Scenario: You installed in Ubuntu Eclipse IDE but to run needed JDK/JRE (Java) being installed in Ec;ipse dir /home/leonidassavvides/Documents/eclipse/jre/bin/java , instead of install JAva in this directory you install in default directory and create a symbolic link at /home/leonidassavvides/Documents/eclipse/jre/bin/java .

# create directories that needed
leonidassavvides@ubuntu:~$ mkdir -p /home/leonidassavvides/Documents/eclipse/jre/bin

# link directories java to java/eclipse
leonidassavvides@ubuntu:~$ ln -s /usr/lib/jvm/jdk-11.0.3/bin/java /home/leonidassavvides/Documents/eclipse/jre/bin/java

now Eclipse IDE should work

2

Scenario: Extract Prestashop zip archive keeping origin before extract files/folders permissions the same

coming soon

 

 

My Reading list for Summer 2019 – Data Science

I took a ZENVA course in Data Science in May 2019 so my reading list is as here – along some programming books in [advanced in Data Structures & Design Patterns] Python/C++/PHP/Java NOT referred here…

 

Laura Igual • Santi Seguí Introduction to Data Science , Springer A Python Approach to Concepts, Techniques and Applications For this reason all the code examples and data in this book are available to download at https://github. com/DataScienceUB/introduction-datascience-python-book

=====

José Unpingco Python for Probability, Statistics, and Machine Learning , Springer

=====

Python Web Scraping , Packt Second Edition Hands-on data scraping and crawling using PyQT, Selnium, HTML and Python Katharine Jarmul, Richard Lawson

=====

PROBABILITY AND STATISTICS FOR COMPUTER SCIENTISTS SECOND EDITION Michael Baron CRC Press, Taylor & Francis Group

=====

IPython Interactive Computing and Visualization Cookbook , Packt Copyright © 2014 Packt Publishing

=====

Software Architecture with Python , Packt Design and architect highly scalable, robust, clean, and high performance applications in Python Anand Balachandran Pillai

Why every Creator needs to take a look at Ubuntu Studio OS Linux

Why bother installing and trying creative software and Not give Ubuntu Studio OS Linux a try…

In Ubuntu Studio OS you will find Ubuntu OS Linux with preinstalled all major/best FOSS creative Apps for Linux… [carefully selected completely FREE and Open Source] many also have Windows and Mac editions… like Video Production Apps, Audio Production, Graphics Design, EBook/Book Publishing/Editing, Office Apps, and more

Basically you have to install Nothing… only give a try to the Apps, because exist Apps for any Creative Work you can imagine… and in some cases many alternative Apps to do the same thing eg Video Production, so just try and install nothing…

Soon coming screen shots of my Ubuntu Studio OS Linux VM (Guest) in VMWare Player 14… Windows 10 Pro (Host PC)

Why learn more than

2 programming languages

================

Simply because you have to use
Right tool/language for the job to be done !

You cannot build web site without JavaScript and HTML5/CSS3 for front-end and if you consider backend you are recommended PHP & PHP Frameworks or Python and Frameworks or ASP.net/C#…

You cann’t build an Apple device/iOS/MacOS App without either use

Swift Or HTML5/CSS3/JS as a front-end development…

You cann’t build an Android device App without either use

Java Or HTML5/CSS3/JS as a front-end development…

You cann’t Build a Windows or Linux or MacOS system tool/driver/program without C/C++.

Also if you consider cross-platform GUI software you can use Java or Python or C#-Xamarin/C#… Electron/nw.js/Cordova/JS/TypeScript/ES6+ so you build it for first platform and then adjust/adapt it for the other platforms easily…

Python invaded Scientific research and community… and is preferred… and the list of the best tool for the job continues…and goes on…

Myself

Currently I am expert in HTML5/CSS3/JS, PHP And PHP Frameworks like CakePHP or Codeigniter … I also know Android/Java native development and also know Cross-platform development desktop and mobile Apps in HTML5/JS using frameworks like Electron/nw.js/Cordova…

I am upper beginner in Python 3 learning now Python Data Structures and Algorithms… also plan to study Python for Scientific research and Computational Physics… Python GUI programs… Python for Raspberry Pi 3B+… Python OOP & Design Patterns… etc

Also soon after these planing study C++ Data Structures and Algorithms and recap my Java Data Structures and Algorithms … skills !

Also as Linux guy I have skills in Linux Administration and some programming skills in Shell Scripting/Perl/Python/C language.

I plan studying more C/C++ and involved more in Linux Security… and also study TypeScript and ES6+/ES2016-ES2018 for web, mobile and desktop development.

After these plan study Swift for iOS & MacOS development.

Basically I recommend when you study programming languages learn something interesting and motivated for yourself…

Also after the basics, to cover Data Structures and Algorithms… OOP … And Design Patterns and Frameworks eg for JS the most popular are Vue.js or Angular or ReactJS…
Or the PHP Frameworks like Codeigniter, CakePHP, Laravel, SlimPHP, …

Basically I want to be advanced developer in JS/HTML5, TypeScript/Node.js, Java, Python, PHP, Swift and C/C++ about 10 languages !!!!
So be able do anything in programming using the right tool for the job easily… on time… and perfectly !!!

Best Python Textbook for Upper-Beginners – for
Programming-II course or Algorithms & Data Structures course

==================

 

 

 

 

 

 

Practice Computers and Electronics with Best Selling UK Raspberry Pi 3B+ – First Impressions

Today i escaped from my PC and operated my recent purchase a Raspberry Pi 3B+ the best selling UK “PC”.

I feel i can Not await to try tomorrow a big download (over 700MB) on this Board PC… i mean for the free (for Raspbian OS) Mathematica Computer Algebra System software… more info on the way tomorrow… !!!

Second Day

I installed the Free for raspberry pi Mathematica Software… My first impression was that needed to read a little of Docs/Manual/books to make the most of this… killing app for this embedded system…

More Coming Soon !!!

Starting with Raspberry Pi 3 B+

Suggestion

Read this book first even yet bought Raspberry Pi … this guides you what’s available and what buy… for yours needs… eg if you buy kit pack must include pi charger but plain box Pi only Raspberry Pi 3 B+ board includes and even Not include SD Micro card… so you have also buy the latter too.

Also includes many things to do with your new Raspberry Pi … This book refers for Raspberry Pi 3 B (2016)… but as of date of writing the newest model is 3 B+ (2018) … but the differences between the two is minimal – do your search and you will proof this – so is ok to use this book.

The book is…

Raspberry Pi For Dummies 3rd Edition by Sean McManus (Author), Mike Cook (Author)