Valdeci Gomes coderade

File formats comparison: CSV, JSON, Parquet, ORC

Key results

Whenever you need to store your data on S3 / Data Lake / External table choose file format wisely:

Parquet / ORC are the best options due to efficient data layout, compression, indexing capabilities
Columnar formats allow for column projection and partition pruning (reading only relevant data!)
Binary formats enable schema evolution which is very applicable for constantly changing business environment

After a weekend of research, stress and pain I finally figure out how to install manjaro 17 and configure the nvidia/bumblebee drivers on my avell laptop

Here's my notebook specs:

$ inxi -MGCNA

Machine:   Device: laptop System: Avell High Performance product: 1513
           Mobo: N/A model: N/A v: 0.1 UEFI: American Megatrends v: N.1.02 date: 09/28/2016
Battery    BAT0: charge: 44.0 Wh 100.0% condition: 44.0/44.0 Wh (100%)

Ruby Association Certified Ruby Examination Silver Sample Questions

Q1. Which of the following have true values in Ruby? (Choose two.)

(a) ""
(b) 0
(c) false
(d) nil

Github Two-Factor Authentication (2FA) for Brazil via SMS

The Github doesn't provide country code for Brazil (+55). To add this option, just run the code below in your console. The option Brazil +55 will be the first on the list, already selected:

🇧🇷 [pt-BR]

Autenticação em dois fatores (2FA) do GitHub para o Brasil via SMS

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	#!/bin/bash

	BASEDIR=$(dirname "$0")
	echo "$BASEDIR"

	if [[ $# -eq 0 ]] ; then
	echo 'How to \n\n\n import_nexus_dep.sh http://<YOURREPO> <USER> <PASS> <M2_PATHh> <FILTER(optional)>'
	exit 0
	fi