Rafael M. rafaelmaeuer

## ubuntu-remove-ppa.sh
ls /etc/apt/sources.list.d

sudo rm -f /etc/apt/sources.list.d/myppa.list

## xcode-unsupported.md

      
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                rafaelmaeuer
                / xcode-unsupported.md
            
            
              Last active
              March 28, 2024 12:54
            
              
                https://developer.apple.com/forums/thread/727651
https://stackoverflow.com/questions/55596733/is-it-possible-to-install-xcode-10-2-on-high-sierra-10-13-6/55645290#55645290
              
          
Download Xcode 14.3.1 via this link (you need to be signed in with your Apple Id) and install it
Edit Xcode.app/Contents/Info.plist and change the Minimum System Version to 12
(Optional) Do the same for Xcode.app/Contents/Developer/Applications/Simulator.app/Contents/Info.plist (might require a restart of Xcode and/or Mac OS to make it open the simulator on run)
(Optional) Replace Xcode.app/Contents/Developer/usr/bin/xcodebuild with the one from 14.2 (or another version you have currently installed, such as 14.0).
(Optional) Execute sudo xattr -cr /Applications/Xcode.app if Error "Xcode is corrupted and cannot be opened"
If there are problems with the simulator, reboot your Mac


## async-sleep.js
var sleepSetTimeout_ctrl;

function sleep(ms) {
    clearInterval(sleepSetTimeout_ctrl);
    return new Promise(resolve => sleepSetTimeout_ctrl = setTimeout(resolve, ms));
}

await sleep(<duration>);

## loop-object-index.js
const object = {a:2, b:4, c:6, d:8};

Object.entries(object).forEach(([key, value], index) => {
  console.log(`${index}: ${key} = ${value}`);
});

## array-implode.php
<?php
$langs = array("PHP", "JavaScript", "Python", "C++", "Ruby");

$newLangsSpace = implode(" ", $langs);
$newLangsComma = implode(", ", $langs);
$newLangsHyphen = implode("-", $langs);

// Since we are printing a string, we can use echo to display the output in the browser
echo $newLangsSpace."<br>"."<br>";
echo $newLangsComma."<br>"."<br>";

## try-catch.php
<?php
function inverse($x) {
    if (!$x) {
        throw new Exception('Division by zero.');
    }
    return 1/$x;
}

try {
    echo inverse(5) . "\n";

## throw-error.php
<?php
if ($divisor == 0) {
  // Other error-levels: E_USER_NOTICE, E_USER_WARNING
  trigger_error("Cannot divide by zero", E_USER_ERROR);
}
?>

## wordpress-debug.php
// Turns WordPress debugging on in wp-config.php
define('WP_DEBUG', true);

// Tells WordPress to log everything to the /wp-content/debug.log file
define('WP_DEBUG_LOG', true);

// Doesn’t force the PHP 'display_errors' variable to be on
define('WP_DEBUG_DISPLAY', false);

// Hides errors from being displayed on-screen

## bash-return-exit.sh
# return 42 by exit code
# will triger error if set -e
exit 42

## bash-brackets-conditionals.md

      
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                rafaelmaeuer
                / bash-brackets-conditionals.md
            
            
              Last active
              August 28, 2023 09:22
            
              
                https://stackoverflow.com/questions/12765340/difference-between-parentheses-and-brackets-in-bash-conditionals/12765593#12765593
              
          
    The tests you had listed :

Single Parenthesis - ( ... ) is creating a subshell
Double Parenthesis - (( ... )) is for arithmetic operation
Single Square Bracket - [ ... ] is the syntax for the POSIX test
Double Square Brackets - [[ ... ]] is the syntax for bash conditional expressions (similar to test but more powerful)
	ls /etc/apt/sources.list.d

	sudo rm -f /etc/apt/sources.list.d/myppa.list
	var sleepSetTimeout_ctrl;

	function sleep(ms) {
	clearInterval(sleepSetTimeout_ctrl);
	return new Promise(resolve => sleepSetTimeout_ctrl = setTimeout(resolve, ms));
	}

	await sleep(<duration>);
	const object = {a:2, b:4, c:6, d:8};

	Object.entries(object).forEach(([key, value], index) => {
	console.log(`${index}: ${key} = ${value}`);
	});
	<?php
	$langs = array("PHP", "JavaScript", "Python", "C++", "Ruby");

	$newLangsSpace = implode(" ", $langs);
	$newLangsComma = implode(", ", $langs);
	$newLangsHyphen = implode("-", $langs);

	// Since we are printing a string, we can use echo to display the output in the browser
	echo $newLangsSpace."<br>"."<br>";
	echo $newLangsComma."<br>"."<br>";
	<?php
	function inverse($x) {
	if (!$x) {
	throw new Exception('Division by zero.');
	}
	return 1/$x;
	}

	try {
	echo inverse(5) . "\n";
	<?php
	if ($divisor == 0) {
	// Other error-levels: E_USER_NOTICE, E_USER_WARNING
	trigger_error("Cannot divide by zero", E_USER_ERROR);
	}
	?>
	// Turns WordPress debugging on in wp-config.php
	define('WP_DEBUG', true);

	// Tells WordPress to log everything to the /wp-content/debug.log file
	define('WP_DEBUG_LOG', true);

	// Doesn’t force the PHP 'display_errors' variable to be on
	define('WP_DEBUG_DISPLAY', false);

	// Hides errors from being displayed on-screen
	# return 42 by exit code
	# will triger error if set -e
	exit 42