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Conceitos fundamentais de linguagens de programação

Este documento tem a intenção de apresentar alguns dos conceitos fundamentais que permeiam as linguagens de programação. A ideia é mostrar algumas das principais características e diferenças que existem entre elas, para que dessa forma você possa determinar em que momento é melhor escolher uma dada linguagem em detrimento das outras.

Tradução

Compilador

Uma linguagem compilada é aquela no qual um programa chamado compilador irá fazer uma análise sintática, léxica e semântica de toda a estrutura de um código fonte e o converterá em um novo formato conhecido como código objeto que poderá ser identificado pelo computador.

Book ID	Title	Author	Links
1-A-1	Red Blood and Black Ink: Journalism in the Old West	David Dary	Amazon \|
1-A-2	Media and the American Mind: From Morse to McLuhan	Daniel J. Czitrom	Amazon \| Goodreads
1-A-3	A Social History of the Media: From Gutenberg to the Internet	Peter Burke	Amazon \| Goodreads
1-A-4	Media Technology and Society: A History From the Telegraph to the Internet	Brian Winston	Amazon \| Goodreads
1-A-5	The Television Will be Revolutionized	Amanda D. Lotz	Amazon \| Goodreads
1-A-

Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

ZSH (using Oh My ZSH) on Manjaro Linux

0. If `ZSH` is not already installed on your Manjaro system you can do it with the command:

sudo pacman -Syu zsh

You do not need to install manjaro-zsh-config and all the other related packages like zsh-syntax-highlighting, zsh-history-substring-search, zsh-autosuggestions, etc., as we will use Oh My Zsh.

StegoPVD

This Tinyscript-based tool allows to apply steganography based on PVD (Pixel Value Differencing) in order to retrieve hidden data from an image.

$ pip install tinyscript
$ tsm install stegopvd

Add Git Branch Name to Terminal Prompt (zsh)

Updated for MacOS with zsh

Catalina
Big Sur
Monterey
Ventura
Sonoma

How to install OCI8 on macOS 10.15 (Catalina) with PHP 7.3 or 7.4

Requirements

Homebrew
Command Line Tools for Xcode
PHP 7.3 or 7.4 via Homebrew

	GOVULTR
	VULTRMATCH https://www.vultr.com/match/

	30FREE50V https://www.vultr.com/promo/try50/
	100VULTR30FREE https://www.vultr.com/promo/try100/
	30VULTRONEFIFTY https://www.vultr.com/promo/try150/
	VULTR200FREE https://www.vultr.com/promo/try200/
	FLYVULTR250 https://www.vultr.com/promo/try250/
	GIVE100GET35
	GIVE100GET25 invalid

	# crystal build foo.cr --release
	# ./foo 37.7749 -122.4194 34.0522 -118.2437
	#
	# Around 0.08s.

	module GeoCalculator
	EARTH_RADIUS_IN_KM = 6371.0

	def self.distance(lat1, lon1, lat2, lon2)
	dlat = lat2 - lat1

	Github.com ui .currently does not natively supoport search for multiple topic tags as of now. However their api allows you to query multiple tags. Below is a simple example to query github.com with ecs and go topic tags.

	curl -H "Accept: application/vnd.github.mercy-preview+json" \
	https://api.github.com/search/repositories?q=topic:ecs+topic:go

	Response from the github can be rather verbose so lets filter only relavant info such repo url and description.

	curl -H "Accept: application/vnd.github.mercy-preview+json" \
	https://api.github.com/search/repositories\?q\=topic:ecs+topic:go \| jq '.items[] \| {url:.url, description:.description}'