Caio Mathielo mathielo

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Fix broken CSV encoding in Excel for Mac

Problem

Excel for Mac can't handle UTF-8 encoded CSV files. Official statement by Microsoft:

Excel for Mac does not currently support UTF-8. If this is a feature you’d like to see in future versions of Office for Mac, be sure to send your feedback by clicking “Help” > “Send Feedback” [...]

Solution

Convert the UTF-8 file to UTF-16 Little Endian by running this one-liner in Terminal:

( printf "\xff\xfe" ; iconv -f utf-8 -t utf-16le INPUT_UTF8_FILE.csv ) > OUTPUT_UTF16_FILE.csv

Things to remember when compiling/linking C/C++ software

by Angel Leon. March 17, 2015;

Last update on December 14, 2023

Updated on February 27, 2023

Updated August 29, 2019.

	#!/usr/bin/env groovy
	// https://github.com/freebsd/freebsd-ci/blob/master/scripts/build/build-test.groovy
	// http://stackoverflow.com/a/40294220

	// https://JENKINS_HOST/scriptApproval/ - for script approval

	import java.util.Date

	def isMaster = env.BRANCH_NAME == 'master'
	def isDevelop = env.BRANCH_NAME == 'develop'

	#!/bin/bash
	cd "$(git rev-parse --show-toplevel)"
	ESLINT="node_modules/.bin/eslint"
	pwd

	if [[ ! -x "$ESLINT" ]]; then
	printf "\t\033[41mPlease install ESlint\033[0m (npm install eslint)\n"
	exit 1
	fi

	# In order for gpg to find gpg-agent, gpg-agent must be running, and there must be an env
	# variable pointing GPG to the gpg-agent socket. This little script, which must be sourced
	# in your shell's init script (ie, .bash_profile, .zshrc, whatever), will either start
	# gpg-agent or set up the GPG_AGENT_INFO variable if it's already running.

	# Add the following to your shell init to set up gpg-agent automatically for every shell
	if [ -f ~/.gnupg/.gpg-agent-info ] && [ -n "$(pgrep gpg-agent)" ]; then
	source ~/.gnupg/.gpg-agent-info
	export GPG_AGENT_INFO
	else

	//
	// FileUploader.swift
	//
	// Copyright (c) 2015 Narciso Cerezo Jiménez. All rights reserved.
	// Largely based on this stackoverflow question: http://stackoverflow.com/questions/26121827/uploading-file-with-parameters-using-alamofire/28467829//

	import Foundation
	import Alamofire

	private struct FileUploadInfo {

	/*
	********************************************************************************
	Golang - Asterisk and Ampersand Cheatsheet
	********************************************************************************

	Also available at: https://play.golang.org/p/lNpnS9j1ma

	Allowed:
	--------
	p := Person{"Steve", 28} stores the value

	import Foundation

	extension String
	{
	var length: Int {
	get {
	return countElements(self)
	}
	}