/**
* @param mixed $v
* @param bool $allow0 [optional]
* @return int
* @throws DFE
*/
function df_nat($v, $allow0 = false)
{
/** @var int $result */
$result = df_int($v, $allow0);
if ($allow0) {
df_assert_ge(0, $result);
} else {
df_assert_gt0($result);
}
return $result;
}
/** @return void */
public static function restore()
{
array_pop(self::$_stack);
df_assert_gt0(count(self::$_stack));
}
/**
* @param mixed[] $args
* @return string
*/
function df_format(...$args)
{
$args = df_args($args);
/** @var string $result */
$result = null;
/** @var int $count */
$count = count($args);
df_assert_gt0($count);
switch ($count) {
case 1:
$result = $args[0];
break;
case 2:
/** @var mixed $params */
$params = $args[1];
if (is_array($params)) {
$result = strtr($args[0], $params);
}
break;
}
return !is_null($result) ? $result : df_sprintf($args);
}