Make various corrections to notes

Database/MongoDB.md

@@ -328,7 +328,7 @@ db.getCollectionNames().forEach(function(collection) {
    print("Indexes for " + collection + ":");
    printjson(indexes);
 });
-db.<collection>.getIndexes()  # view collenction's index
+db.<collection>.getIndexes()  # view collection's index
 
 db.<collection>.dropIndexes()  # drop all indexes
 db.<collection>.dropIndex( { "index-name": 1 } )  # drop a specific index

Java/Java.md

@@ -55,7 +55,7 @@ System.out.print(output_1 + _ + output_n);
 [String.format() Examples](https://dzone.com/articles/java-string-format-examples)
 
 ```java
-System.out.printf("stringa %..", variable);
+System.out.printf("string %..", variable);
 System.out.println(String.format(format, args));
 ```
 
@@ -79,11 +79,11 @@ Scanner scanner = new Scanner(System.in);  //Scanner obj init
 scanner.useDelimiter("delimitatore");   //delimiter setting
 scanner.close()  //closing of Scanner, releases memory
 
-int variabile_int_1 = scanner.nextInt();   //takes integer number
+int variable_int_1 = scanner.nextInt();   //takes integer number
 String string_1 = scanner.nextLine();   //takes line of text (\n ends line)
 String string_1 = scanner.next();   //takes text (spacec ends word)
-double variabile_double_1 = scanner.nextDouble();  //takes double decimal number
+double variable_double_1 = scanner.nextDouble();  //takes double decimal number
-boolean variabile_bool = scanner.netxBoolean();  //takes boolean value
+boolean variable_bool = scanner.netxBoolean();  //takes boolean value
 //(TRUE, FALSE, true, false, True, False)
 ```
 
@@ -137,8 +137,8 @@ Type variable = new WrapperClass(primitiveValue);  //automatic unboxing
 WrapperClass.MIN_VALUE  //constant holding min possible value of wrapper class
 WrapperClass.MAX_VALUE  //constant holding man possible value of wrapper class
 
-ClasseWrapper.parseClasseWrapper(stringa);  //converte il valore di una stringa in uno della classe wrapper (metodo statico), eccezione NumberFOrmatException se l'operazione fallisce
+WrapperClass.parseClasseWrapper(string);  // converts the tring to the wrapper class, NumberFOrmatException on error
-ClasseWrapper.toString(valore_tipo_primitivo);  //converte il valore della classe wrapper in una string (metodo statico)
+WrapperClass.toString(primitive);  // converts the wrapper class value to a string
 ```
 
 ### String & Char
@@ -167,7 +167,7 @@ Escape Character   | Character
 ### String Concatenation
 
 The value of the variable is appende to the string literal.  
-`"text" + variabile`  
+`"text" + variable`  
 String are immutable. Concatenation creates a new string.
 
 ### String Conversion to Number

JavaScript/DOM.md

@@ -16,14 +16,14 @@ Javascript
 var node = document.getElementById('id');
 
 // By Tag Name
-var node = document.getElementsByTagName('tag');
+var nodes = document.getElementsByTagName('tag');
 
 // By Class Name
-var node = document.getElementsByClassName('class');
+var nodes = document.getElementsByClassName('class');
 
 // By CSS Query
 var node = document.querySelector('css-selector');
-var node = document.querySelectorAll('css-selector');
+var nodes = document.querySelectorAll('css-selector');
 ```
 
 ## Manupulating the DOM
@@ -119,7 +119,7 @@ document.createTextNode('text');
 domNode.appendChild(childToAppend);  // insert childTaAppend after domNode
 
 // insert node before domNode
-domNode.insertBEfore(childToInsert, domnode);
+domNode.insertBefore(childToInsert, domnode);
 domNode.parentNode.insertBefore(childToInsert, nodeAfterChild);
 
 // remove a node

JavaScript/Events & Animation.md

@@ -63,6 +63,9 @@ window.setInterval(callbackFunction, delayMilliseconds);
 //To stop an animation store the timer into a variable and clear it
 window.clearTimeout(timer);
 window.clearInterval(timer);
+
+// execute a callback at each frame
+window.requestAnimationFrame(callbackFunction);
 ```
 
 ### Element Position & dimensions

JavaScript/JavaScript.md

@@ -28,16 +28,15 @@
  */
 ```
 
-### Naming Conventions
-
-| Elements | Case      |
-| -------- | --------- |
-| variable | camelCase |
-
 ### Modern Mode
 
 If located at the top of the script the whole script works the “modern” way (enables post-ES5 functionalities).  
-`"use strict"`
+
+```js
+"use strict"
+
+// script contents
+```
 
 ### Pop-Up message
 
@@ -328,8 +327,7 @@ if (condition) {
 
 ### Ternary Operator
 
-`condition ? instruction1 : istruction2;`  
+`condition ? <expr1> : <expr2>;`  
-Ff TRUE execute instruction1, execute instruction2 otherwise.
 
 ### Switch Statement
 
@@ -480,6 +478,7 @@ for(let key in dict) {
   // do something with "key" and "value" variables
 }
 
+Object.keys(dict).forEach(key => { });
 ```
 
 ## Functions

Node.js/Standard Packages/http(s).md

@@ -11,7 +11,7 @@ https.request(
         method: "GET",  // POST, ...
         path: "/page/?param=value"
     }, 
-    (response) => {  // respnse is IncomingMessage
+    (response) => {  // response is IncomingMessage
         // do stuff
     }
 ).end();

PHP/Database.md

@@ -62,7 +62,7 @@ $stmt->execute();
 By default PDO converts all results into strings since it is a generic driver for multiple databases.
 Its possible to disable this behaviour setting `PDO::ATTR_STRINGIFY_FETCHES` and `PDO::ATTR_EMULATE_PREPARES` as `false`.
 
-**NOTE**: `FETCH_OBJ` abd `FETCH_CLASS` return classes and don't have this bheaviour.
+**NOTE**: `FETCH_OBJ` abd `FETCH_CLASS` return classes and don't have this behaviour.
 
 ```php
 pdo->setAttribute()
@@ -82,7 +82,7 @@ $stmt = $pdo->prepare($sql);
 $stmt->execute([':marker' => value]);
 $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
 
-$stmt->debugDumpParams();  # print the SQK query that has been sent to the database
+$stmt->debugDumpParams();  # print the SQL query that has been sent to the database
 ```
 
 ## [SQLite3](https://www.php.net/manual/en/book.sqlite3.php)

PHP/Dependecy Injection.md

@@ -15,7 +15,6 @@ class Foo
 ## Dependency Injection Container
 
 The **Dependecy Injection Container** (DIC) allow to archive all the dependencies in a single `Container` class. Some offer automatic resolution of the dependecies.
-Containers aid the developer in the handling of the dependecies: get/has/set.
 
 ## [PHP-DI](https://php-di.org/)
 

PHP/PHP.md

@@ -15,7 +15,7 @@ declare(strict_types=1);  # activates variable type checking on function argumen
 include "path\\file.php";  # import an external php file, E_WARNING if fails
 include_once "path\\file.php";  # imports only if not already loaded
 
-require "path\\file.php";  # # import an external php file, E_COMPILE_ERROR if fails
+require "path\\file.php";  # import an external php file, E_COMPILE_ERROR if fails
 require_once "path\\file.php";  # imports only if not already loaded
 ```
 
@@ -34,7 +34,7 @@ return [
 ```
 
 ```php
-$config = include "config.php";  // retireve config wnd store into variable
+$config = include "config.php";  // retireve config and store into variable
 ```
 
 ## Namespace
@@ -136,12 +136,12 @@ $c = 7E-10; // 0.0000000007
 ### Mathematical Operators
 
 | Operator | Operation      |
-|----------|----------------|
+| -------- | -------------- |
 | `-`      | Subtraction    |
 | `*`      | Multiplication |
 | `/`      | Division       |
 | `%`      | Modulo         |
-| `**`     | Exponentiatio  |
+| `**`     | Exponentiation |
 | `var++`  | Post Increment |
 | `++var`  | Pre Increment  |
 | `var--`  | Post Decrement |
@@ -164,7 +164,7 @@ A string is a sequrnce of ASCII characters. In PHP a string is an array of chara
 ### String Concatenation
 
 ```php
-$string1 . $string2; method 1
+$string1 . $string2; # method 1
 $string1 .= $string2;  # method 2
 ```
 
@@ -190,7 +190,7 @@ define ('CONSTANT_NAME', 'value')
 
 ### Magic Constants `__NAME__`
 
-- `__FILE__`: sctipt path + scrit filename
+- `__FILE__`: script path + script filename
 - `__DIR__`: file directory
 - `__LINE__`: current line number
 - `__FUNCTION__`: the function name, or {closure} for anonymous functions.
@@ -261,7 +261,7 @@ list($array1 [, $array2, ...]) = $data;  # Python-like tuple unpacking
 
 ### Associative Arrays
 
-Associative arrays have a value as an index. Alternative names are *hash tables* or *dictionaries*.
+Associative arrays have a value as an index. Alternative names are _hash tables_ or _dictionaries_.
 
 ```php
 $italianDay = [
@@ -282,7 +282,7 @@ $italianDay["Mon"];  # evaluates to Lunedì
 ### Conditional Opeartors
 
 | Operator    | Operation                |
-|-------------|--------------------------|
+| ----------- | ------------------------ |
 | $a `==` $b  | value equality           |
 | $a `===` $b | value & type equality    |
 | $a `!=` $b  | value inequality         |
@@ -299,13 +299,13 @@ With `==` a string evaluates to `0`.
 ### Logical Operators
 
 | Operator | Example     | Result                                               |
-|----------|-------------|------------------------------------------------------|
+| -------- | ----------- | ---------------------------------------------------- | --- | ------------------------------------ |
 | `and`    | `$a and $b` | TRUE if both `$a` and `$b` are TRUE.                 |
 | `or`     | `$a or $b`  | TRUE if either `$a` or `$b` is TRUE.                 |
-| `xor`    | `$a xor $b` | TRUE if either `$a` or `$b` is TRUE, but *not both*. |
+| `xor`    | `$a xor $b` | TRUE if either `$a` or `$b` is TRUE, but _not both_. |
-| `not`    | `!$a`       | TRUE if `$a` is *not* TRUE.                          |
+| `not`    | `!$a`       | TRUE if `$a` is _not_ TRUE.                          |
 | `and`    | `$a && $b`  | TRUE if both `$a` and `$b` are TRUE.                 |
-| `or`     | `$a || $b`  | TRUE if either `$a` or `$b` is TRUE.                 |
+| `or`     | `$a         |                                                      | $b` | TRUE if either `$a` or `$b` is TRUE. |
 
 ### Ternary Operator
 
@@ -334,7 +334,7 @@ if $a > $b
 if $a == $b
     return 0;
 if $a < $b
-    return 0;
+    return -1;
 ```
 
 ### `If` - `Elseif` - `Else`
@@ -535,7 +535,7 @@ $foo = function (type $parameter) use ($average) {
 
 ### Union Types (PHP 8)
 
-**Union types** are a collection of two or more types which indicate that *either* one of those *can be used*.
+**Union types** are a collection of two or more types which indicate that _either_ one of those _can be used_.
 
 ```php
 public function foo(Foo|Bar $input): int|float;
@@ -560,8 +560,8 @@ foo(
 
 ### Scope & Visibility
 
-`public` methods and attrivutes are visible to anyone (*default*).
+`public` methods and attributes are visible to anyone (_default_).
-`private` methods and attrivutes are visible only inside the class in which are declared.
+`private` methods and attributes are visible only inside the class in which are declared.
 `protected` methods and attributes are visible only to child classes.
 
 `final` classes cannot be extended.
@@ -595,15 +595,15 @@ class ClassName
     }
 }
 
-$object = new ClassName;  # case insensitive (CLASSNAME, CLassName, classname)
+$object = new ClassName;  # case insensitive (CLASSNAME, ClassName, classname)
-$object->attrivute = value;
+$object->attribute = value;
 $object->func();
 $object::CONSTANT;
 
 $var = $object;  # copy by reference
 $var = clone $object  # copy by value
 
-$object instanceof ClassName  // check typo of the object
+$object instanceof ClassName  // check type of the object
 ```
 
 ### Static classes, attributes & methods
@@ -698,10 +698,10 @@ class ClassName implements InterfaceName {
 
 ### Traits
 
-`Traits` allows the riutilization of code inside different classes without links of inheritance.
+`Traits` allows the reutilization of code inside different classes without links of inheritance.
-It can be used to mitigate the problem of *multiple inheritance*, which is absent in PHP.
+It can be used to mitigate the problem of _multiple inheritance_, which is absent in PHP.
 
-In case of functions name conflic it's possible to use `insteadof` to specify which function to use. It's also possible to use an *alias* to resolve the conflicts.
+In case of functions name conflic it's possible to use `insteadof` to specify which function to use. It's also possible to use an _alias_ to resolve the conflicts.
 
 ```php
 trait TraitName {
@@ -784,7 +784,7 @@ hash($algorithm, $data);
 
 Algorithms currently supported:
 
-- **PASSWORD_DEFAULT** - Use the *bcrypt* algorithm (default as of PHP 5.5.0). Note that this constant is designed to change over time as new and stronger algorithms are added to PHP.
+- **PASSWORD_DEFAULT** - Use the _bcrypt_ algorithm (default as of PHP 5.5.0). Note that this constant is designed to change over time as new and stronger algorithms are added to PHP.
 - **PASSWORD_BCRYPT** - Use the **CRYPT_BLOWFISH** algorithm to create the hash. This will produce a standard `crypt()` compatible hash using the "$2y$" identifier. The result will always be a 60 character string, or FALSE on failure.
 - **PASSWORD_ARGON2I** - Use the **Argon2i** hashing algorithm to create the hash. This algorithm is only available if PHP has been compiled with Argon2 support.
 - **PASSWORD_ARGON2ID** - Use the **Argon2id** hashing algorithm to create the hash. This algorithm is only available if PHP has been compiled with Argon2 support.
@@ -792,11 +792,11 @@ Algorithms currently supported:
 **Supported options for PASSWORD_BCRYPT**:
 
 - **salt** (string) - to manually provide a salt to use when hashing the password. Note that this will override and prevent a salt from being automatically generated.
-    If omitted, a random salt will be generated by password_hash() for each password hashed. This is the intended mode of operation.
+  If omitted, a random salt will be generated by password_hash() for each password hashed. This is the intended mode of operation.
-    **Warning**: The salt option has been deprecated as of PHP 7.0.0. It is now preferred to simply use the salt that is generated by default.
+  **Warning**: The salt option has been deprecated as of PHP 7.0.0. It is now preferred to simply use the salt that is generated by default.
 
 - **cost** (integer) - which denotes the algorithmic cost that should be used. Examples of these values can be found on the crypt() page.
-    If omitted, a default value of 10 will be used. This is a good baseline cost, but you may want to consider increasing it depending on your hardware.
+  If omitted, a default value of 10 will be used. This is a good baseline cost, but you may want to consider increasing it depending on your hardware.
 
 **Supported options for PASSWORD_ARGON2I and PASSWORD_ARGON2ID**:
 
@@ -868,19 +868,18 @@ error_log(sprintf("[%s] Error: _", date("Y-m-d h:i:s")), 3, "path\\log.log")
 
 ## Exception Handling
 
-PHP offers the possibility to handle errors with the *exception model*.
+PHP offers the possibility to handle errors with the _exception model_.
 
 ```php
 try {
     // dangerous code
-
 } catch(ExcpetionType1 | ExceptionType2 $e) {
     printf("Errore: %s", $e->getMessage());
 } catch(Excpetion $e) {
     // handle or report exception
 }
 
-throw new ExceptionType("message");  // trow an exception
+throw new ExceptionType("message");  // throw an exception
 ```
 
 All exceptions in PHP implement the interface `Throwable`.

PHP/Simple_MVC/Simple_MVC.md

@@ -1,6 +1,8 @@
 # [SimpleMVC](https://github.com/ezimuel/simplemvc) Mini-Framework
 
-Mini framework MVC per scopi didattici basato su Dependency Injection ([PHP-DI][php-di]), Routing ([FastRoute][fastroute]), PSR-7 ([nyholm/psr7][psr7]) e Templates ([Plates][plates])
+SimpleMVC is a micro MVC framework for PHP using [FastRoute][fastroute], [PHP-DI][php-di], [Plates][plates] and [PHP-DI][php-di] standard for HTTP messages.
+
+This framework is mainly used as tutorial for introducing the Model-View-Controller architecture in modern PHP applications.
 
 [php-di]: https://php-di.org/
 [fastroute]: https://github.com/nikic/FastRoute

PHP/Templates with Plates.md

@@ -95,7 +95,7 @@ echo $template->render('template_name', [ "marker" => value, ... ]);
 It's necessary to verify that the output is in the necessary format.
 
 Plates offerts `$this->escape()` or `$this->e()` to validate the output.
-In general the output validation allows toprevent [Cross-Site Scripting][owasp-xss] (XSS).
+In general the output validation allows to prevent [Cross-Site Scripting][owasp-xss] (XSS).
 
 [owasp-xss]: https://owasp.org/www-community/attacks/xss/
 

PHP/Unit Testing.md

@@ -42,7 +42,8 @@ PHPUnit can be configured in a XML file called `phpunit.xml`:
 
 ### Test Structure
 
-**PHPUnit** tests are grouped in classes suffixed with `Test`. Each class *extends* `PHPUnit\Framework\TestCase`. A test is a method of a *test class* prefized with `test`.
+**PHPUnit** tests are grouped in classes suffixed with `Test`. Each class *extends* `PHPUnit\Framework\TestCase`.  
+A test is a method of a *test class* prefized with `test`.  
 PHPUnit is executed from the command line with `vendor/bin/phpunit  --colors`.
 
 ```php
@@ -120,16 +121,15 @@ public function testExceptionNotTrown()
 // same as
 
 /**
-* @dataProvider provideExamNames
 * @doesNotPerformAssertions
 */
-public function testAggiungiEsameNoExceptions(string $esame)
+public function testNoExceptions(string $esame)
 {
-    $this->studente->aggiungiEsame($esame);
+    // code that should succeed (exceptions will make the test fail)
 }
 ```
 
-### Test Setup & Teardown
+### Test Setup & Teardown (Example)
 
 ```php
 class ClassTest extends TestCase

PHP/Web.md

@@ -25,9 +25,9 @@ Handling of HTTP requests happend using the following global variables:
 ```html
 <!-- method MUST BE post -->
 <!-- must have enctype="multipart/form-data" attribute -->
-<form name="invio_file" action="file.php" method="POST" enctype="multipart/form-data">
+<form name="<name>" action="file.php" method="POST" enctype="multipart/form-data">
     <input type="file" name="photo" />
-    <input type="submit" name="Invio" />
+    <input type="submit" name="Send" />
 </form>
 ```
 
@@ -36,13 +36,13 @@ Files in `$_FILES` are memorized in a system temp folder. They can be moved with
 ```php
 if (! isset($_FILES['photo']['error'])) {
     http_response_code(400);  # send a response code
-    echo'<h1>Non è stato inviato nessun file</h1>';
+    echo'<h1>No file has been sent</h1>';
     exit();
 }
 
 if ($_FILES['photo']['error'] != UPLOAD_ERR_OK) {
         http_response_code(400);
-        echo'<h1>Il file inviato non è valido</h1>';
+        echo'<h1>The sent file is invalid</h1>';
         exit();
 }
 
@@ -50,11 +50,11 @@ $path = '/path/to/' . $_FILES['photo']['name'];
 
 if (! move_uploaded_file($_FILES['photo']['tmp_name'], $path)) {
     http_response_code(400);
-    echo'<h1>Errore durante la scrittura del file</h1>';
+    echo'<h1>Error while writing the file</h1>';
     exit();
 }
 
-echo'<h1>File inviato con successo</h1>';
+echo'<h1>File succesfully sent</h1>';
 ```
 
 ### `$_SERVER`
@@ -127,7 +127,8 @@ if(isset($_COOKIE["cookie_name"])) {}
 
 PHP generates a cookie named `PHPSESSID` containing a *session identifier* and an *hash* generated from `IP + timestamp + pseudo-random number`.
 
-To use the session it's necesary to recall the function `session_start()` at the beginning of a PHP script that deals with sesssions; after starting the session information in be savend in the `$_SESSION` array.
+To use the session it's necesary to recall the function `session_start()` at the beginning of a PHP script that deals with sessions.  
+After starting the session information in be savend in the `$_SESSION` array.
 
 ```php
 $_SESSION["key"] = value;  // save data in session file (serialized data)

Rust/Cargo.md

@@ -115,7 +115,7 @@ use <crate_name>::module as alias;  // import module w/ aliass
 pub use <crate_name>::module;  // re-exporting (import and make available to others)
 
 use <crate_name>::module::{self, Item}; // import multiple paths
-use use <crate_name>::module::*; // import all public items (Glob operator)
+pub use <crate_name>::module::*; // import all public items (Glob operator)
 
 module::function();  // use func w/ shorter path
 ```

iOS/ContentView.md

@@ -14,7 +14,7 @@ SwiftUI memorizes internally the value of the `@State` property and updates the
 
 - Simplest view.
 - Permits the visualization of simple UIs.
-- Constituited bay a body of type `View`
+- Constituited by a body of type `View`
 
 ```swift
 struct SimpleViewName: View {
@@ -58,8 +58,8 @@ Most common view to present array contents, it automatically hendles the scrolli
 I can be inegrate d in a `NavigaionView` to handle a `DeailView` of a selectted item in the list.
 
 The basic object that creates the table view is the `List()`. It's job is to create a "cell" for every element in the array.
-The array can be filttered with a *search bar*.
+The array can be filtered with a *search bar*.
-The array elements can be grouped with the `Section()` object that groups cells under a common name un the table.
+The array elements can be grouped with the `Section()` object that groups cells under a common name in the table.
 
 ```swift
 // view name can be any
@@ -83,7 +83,7 @@ struct TableCell: View {
 }
 ```
 
-Every cell can have a link to visualize he details of the selected object. This is done by using `NavigationView` and `NavigationLink`.
+Every cell can have a link to visualize the details of the selected object. This is done by using `NavigationView` and `NavigationLink`.
 
 The `NavigationView` contains the list and the property `.navigationBarTitle()` sets the view title.
 It's possible to add other controls in the top part of the view (buttons, ...) using the property `.navigationBarItems()`.
@@ -129,7 +129,7 @@ struct TabBarView: View {
 }
 ```
 
-The `TabBar` conostruction is made applying the `.tabItem{}` parameter to the object or page that the tab will link to.
+The `TabBar` construction is made applying the `.tabItem{}` parameter to the object or page that the tab will link to.
 It's possible to specify up to 5 `.tabItem{}` elements that will be displayed singularly in the `TabBar`.
 
 Fron the 6th elemnet onwards, the first 4 elemens will appear normally, meanwhile the 5th will become a "more" element that will open a `TableView` with the list of the other `.tabItem{}` elements. This page permis to define which elements will be visible.