bool calculateLeapYear(uint8_t year) {
    if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
        return true;
    } else {
        return false;
    }
}

 if (!String.IsNullOrEmpty(Client.CLADDR1))
            {
                if (Client.CLADDR1 == "NULL")
                {

Handlebars.registerHelper("compare", function(a, operator, b) {
    var result = false;

    try {
      switch (operator) {
        case "==":
          // eslint-disable-next-line eqeqeq
          result = a == b;
          break;
  
        case "===":
          result = a === b;
          break;
  
        case "!=":
          // eslint-disable-next-line eqeqeq
          result = a != b;
          break;
  
        case "!==":
          result = a !== b;
          break;
  
        case "<":
          result = a < b;
          break;
  
        case ">":
          result = a > b;
          break;
  
        case "<=":
          result = a <= b;
          break;
  
        case ">=":
          result = a >= b;
          break;
  
        case "typeof":
          // eslint-disable-next-line valid-typeof
          result = typeof a === b;
          break;
  
        default: {
          throw new Error(
            "helper {{compare}}: invalid operator: ' + ".concat(operator, " + '")
          );
        }
      }
    } catch (err) {
      console.error("\n********** ".concat(err, "."));
    }
  
    return result;
});

private HashMap<String, Tuple6<float[], String[], String[], String[], String[], String>> memberNameChangedToProtectTheInnocent = null;

$MaxSizeGB = [math]::Round($MaxSize/1024/1024/1024,2)
Write-Output "    the maximum size is $MaxSizeGB GB"

public static MyClass {
    private static volatile ProcessManager singleton = null;
    
    public static ProcessManager getInstance() throws Exception {
        if (singleton == null) {
            synchronized (MyClass.class) {
                if (singleton == null) {
                    singleton = new ProcessManager();
                }
            }
        }
        return singleton;
    }
}

<?php
    if(isset($_POST['csrf'])){
        if($_POST['csrf'] !== $_SESSION['csrf']){
            return 'session expired!';
        }
    }

foreach($bookings as $booking) {
	$status = $apiController->getBookingStatus($booking);
	if($status->error == 1) {
		switch($status->message) {
			case "FIND_PRV_KO": continue; //Wrong parameters
			case "ERR_PREN_NOTFOUND": continue; //Request booking cannot be found
			case "ERR_PRV_NOTFOUND": continue; //Check-in not carried out
			default: continue;
		};
		continue;
	}
	//DO SOME STUFF...
}

div.body:first-child:nth-last-child(n+12),
div.body:first-child:nth-last-child(n+12) ~ div.body {
  padding: 3px 5px 2px !important;

  div.rect {
    top: 6px !important;
  }

  div.legend-action {
    top: 3px !important;
  }
}

return [word for word in words if any(all(ch in row for ch in word.lower()) for row in rows)]

<?php 
$k =1;
for($v = 0; $v < $nt; $v++) {         
	$bgClass= 'blueBg';
		if($k > 1 && $k%2 == 0){
			$bgClass= 'whiteBg';
		}
?> 
<tr  class="row_tr <?php echo $bgClass;?>">						
			<td class="row_td td_column_0">&nbsp;</td>					
			<td class="row_td column_1"><?php echo $rows[$v]['nothing'];?></td>
			...
			<td class="row_td td_column_0">&nbsp;</td>
	</tr>

<?php       
	$k++;
	}	
?>

let length str =
    let len = String.length str in
    
    let rec length_helper str curr = 
    if str = "" then 0 else 1 + length_helper (String.sub str 1 (len - curr - 1)) (curr + 1)
    
    in length_helper str 0;;

// IsFooBar being a boolean, we check if it's different from true and from false
if (x.IsFooBar != true && x.IsFooBar != false)
{
    return "error";
}

/**
 * Stringify a JSON object
 * @param {*} value JSON value to stringify
 * @returns {string} stringify JSON
 */
function stringify(value) {
    var result = {};
    try {
        result = JSON.stringify(value);
    } catch (e) {
        Logger.error('Error while trying to stringify ' + e);
        result = JSON.stringify(result);
    }
    return result;
}

maybeSomething match {
  case Some(x) => true
  case None => false
}