Jaziel Lopez jazlopez

main() should be declared as either:

int main(void)
int main(int argc, char **argv)

Or equivalent. For example

EXIT_FAILURE, either in a return statement in main or as an argument to exit(), is the only portable way to indicate failure in a C or C++ program. exit(1) can actually signal successful termination on VMS, for example.

If you're going to be using EXIT_FAILURE when your program fails, then you might as well use EXIT_SUCCESS when it succeeds, just for the sake of symmetry.

On the other hand, if the program never signals failure, you can use either 0 or EXIT_SUCCESS. Both are guaranteed by the standard to signal successful completion. (It's barely possible that EXIT_SUCCESS could have a value other than 0,

Enforce noninstantiability with a private constructor

To write a class that is just a grouping of static methods and static fields whose design does not require a constructor to be instantiated.

// Noninstantiable utility class
public class UtilityClass {
  // Suppress default constructor for noninstantiability
 private UtilityClass() {

Builder Pattern

With this pattern instead of calling the class constructur instead use a static factory method with all of the required parameters and gets a builder object. Then calls setter-like methods on the builder object to set each optional parameter of interest. Finally, calls a parameterless buildmethod to generate the object, which is typically immutable.

public class NutritionFacts { 
  private final int servingSize; 
  private final int servings; 
  private final int calories; 
  private final int fat;

Static factory methods instead of constructors

Source: Effective Java 3rd. Edition

Common names for static factory methods

from—type

A conversion method that takes a single parameter and returns a corresponding instance of this type, for example:

	from PIL import Image, ImageDraw, ImageFont

	original_image = "test.jpg"
	modified_image = "modified.jpg"
	text="YOUR TEST GOES HERE"
	path_font = "/System/Library/Fonts/Supplemental/Verdana.ttf" # modify to your system
	font_size = 80 # modify to your needs
	text_position = (0,0) # modify to your needs
	text_color = (255, 255, 255) # modify rgb color

	# config to don't allow the browser to render the page inside an frame or iframe
	# and avoid clickjacking http://en.wikipedia.org/wiki/Clickjacking
	# if you need to allow [i]frames, you can use SAMEORIGIN or even set an uri with ALLOW-FROM uri
	# https://developer.mozilla.org/en-US/docs/HTTP/X-Frame-Options
	add_header X-Frame-Options SAMEORIGIN;

	# when serving user-supplied content, include a X-Content-Type-Options: nosniff header along with the Content-Type: header,
	# to disable content-type sniffing on some browsers.
	# https://www.owasp.org/index.php/List_of_useful_HTTP_headers
	# currently suppoorted in IE > 8 http://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx

	import numpy as np
	import matplotlib.pyplot as plt

	def compute_cost(x, y, w, b):
	"""
	Computes the cost function for linear regression.

	Args:
	x (ndarray): Shape (m,) Input to the model (Population of cities)
	y (ndarray): Shape (m,) Label (Actual profits for the cities)

	import os
	from jira import JIRA



	auth = {
	'url': 'https://jira.amer.thermo.com/',
	'user': os.getenv('JIRA_USER', ''),
	'password': os.getenv('JIRA_PASSWORD', '')
	}

	# certbot utility stopped working failing with this error
	# No module named '_cffi_backend'


	# resolution
	sudo apt install python3-dev build-essential libssl-dev libffi-dev python3-setuptools
	python3 -m pip install cffi

	# retry it should work
	certbot