Archivi

Frontend, React Native

React Navigation: Screens tramite function components

[vc_row][vc_column][vc_column_text]Consultando la documentazione della libreria React Navigation siamo abituati a vedere i componenti che fungono da Screen definiti in termini di class components:[/vc_column_text][vc_column_text]

class HomeScreen extends React.Component {

static navigationOptions = {

title: 'Home',

};

/* render function, etc */

}

[/vc_column_text][vc_column_text]Per questo motivo credo venga naturale…

Andrea Ercoli
02/10/2019

CSS, Frontend

The C in CSS: cascading

Author: Stefano Frasca The Cascade is a fundamental element of CSS: it means that in order to fully understand how an element will be rendered, a developer should be aware…

Matteo Moretti
10/06/2019

AWS, Devops, S3

Tips and tricks for Simple Storage Service S3

Simple Storage Service – S3 is one of the first services created by Amazon AWS, and it is also one of the most popular. Its simplicity has determined its great…

Loreno Edelmondo
03/06/2019

Ansible, Aurora, AWS, Devops, Doctrine, Lambda, PHP, RDS, Symfony

Amazon Aurora with sharding and Autoscaling

This article describes, from an infrastructural point of view, how to use together the doctrine sharding and Amazon Aurora Autoscaling, on our databases. Nuvola is our main project, which allows…

Loreno Edelmondo
20/05/2019

PHP tip: array_diff an array of objects

That’s tricky! Let’s assume we have two arrays like these:

class Foo

{

public $bar;

public $flag;

public function __construct(string $bar, bool $flag)

{

$this->bar = $bar;

$this->flag = $flag;

}

public function __toString(): string

{

return $this->bar;

}

$array1 = [

new Foo('test', true),

];

$array2 = [

new Foo('test', false),

];

Looking at these few lines I would expect that those two arrays are different but if we compare them…

Matteo Moretti
16/05/2019

AWS, Blockchain, Devops

Amazon Managed Blockchain

Una delle tecnologie più recenti e più promettenti è quella della blockchain(Attenzione alla “B”, con la maiuscola si fa riferimento alla Blockchain di Bitcoin, con la “b” minuscola alla tecnologia…

Loreno Edelmondo
16/05/2019

Symfony

Lightweight controllers everywhere in Symfony

The usual way of defining a controller in a default Symfony installation is by placing it in the src/Controller directory, but there might be situations where you just don’t want…

Matteo Moretti
07/05/2019

Symfony

Composition over inheritance: tackle the “Template Method”

In this article we’re gonna talk about composition over inheritance but not approaching this topic from a theoretical point of view (you can find dozens of good articles online by…

DonCallisto
06/05/2019

Symfony

Dependency injection – Come iniettare servizi taggati

Tagged services Per indicare che un servizio svolge un particolare ruolo in Symfony è possibile configurarlo aggiungendo uno o più tags alla sua definizione. Per esempio, etichettando un servizio con…

Nicola Fornaciari
06/05/2019

Symfony

TWIG: include VS embed VS macro

There are various types of code reuse in Twig but, what are the differences between them? In this article we’ll explore the differences between include, embed and macro. First of…

Matteo Moretti
06/05/2019

CSS, Frontend

CSS: position sticky

In questo articolo, tramite un semplice playground, mostreremo il funzionamento della proprietà css position: sticky. Iniziamo gettando le basi del nostro progetto: Fin qui niente di particolare: abbiamo un div…

Andrea Ercoli
06/05/2019

Symfony

Symfony: Autowire dei repository Doctrine (Repositories as Service)

Con la versione 3.3, Symfony ha introdotto l’autowrire e l’autoconfigure dei servizi, risparmiando a noi developer parecchio lavoro “noioso”. Spesso capita di dovere iniettare un repository Doctrine: out of the…

Alessandro Friscia
06/05/2019