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d=c("Do"=.5,"Do not"=.5,"Try"=0)
par(mar=c(0,0,1,5))
pie(d,col=0:2,main="Your options according to Yoda")
legend(1,1,legend=names(d),fill=0:2,bty="n",xpd=T)

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license: gpl-3.0

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## Python 3 script per scaricare la classifica dei marcatori
## 
import urllib.request
from bs4 import BeautifulSoup

print("Downloading page...")
page=urllib.request.urlopen("http://sport.repubblica.it/marcatori/A").read()

print("Parsing and extracting data...")
soup = BeautifulSoup(page,"html.parser")

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Incremental Transformation of an Iterable Sequence in Java

This work by Marco Torchiano is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

---

This is an example of the iterative and incremental use of patterns and language idioms to improve an initial simple solution. This example was originally developed for the Object Oriented Programming course at Politecnico di Torino

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import java.util.Arrays;
import java.util.Comparator;
import static java.util.Comparator.*;

/**
 * How sorting an array of strings by descending length
 * evolved with the introduction of new Java technologies.
 */
public class SortingEvolution {
	public static void main(String[] args) {

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Where we donate vs. Diseases that kill us - Paired Barchart

This gist reports a redesign of the graph shown in the August 20, 2014 article by Vox.

The original diagram uses two paired bubble charts with categorical levels encoded in colors.

The re-design presented here makes use of two paired opposed bar charts.

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Where we donate vs. Diseases that kill us - Slopegraph

This gist reports a redesign of the graph shown in the August 20, 2014 article by Vox.

The original diagram uses two paired bubble charts with categorical levels encoded in colors.

The re-design presented here makes use of a slopegraph.

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Java idioms for exposing properties

This work by Marco Torchiano is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

---

In several application where a general purpose container needs to access specific objects, properties represent a common technique.

We can loosely define a property as an attribute of an object that can be accessed programmatically based on run-time only information.

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Replacing Observer-Observable (inheritance vs. composition)

Since Java 9 the pair Observer-Observable have been declared deprecated.

They don't provide a rich enough event model for applications. 
For example, they support only the notion that something has changed, 
but they don't convey any information about what has changed. 
There are also some thread-safety and sequencing issues that cannot be fixed compatibly. 

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package streams;

import java.util.stream.LongStream;
import java.util.stream.Stream;

public class FibonacciStream {
	
	public static LongStream fibonacciGG() {
		class FibonacciGenerator{
			int prev=0;