CLearnLesson::_EnsureArgsStrictlyCastableToIntegers

static function _EnsureArgsStrictlyCastableToIntegers ()
{
	$args = func_get_args();
	foreach ($args as $arg)
	{
		if (
			( ! is_numeric($arg) )
			|| ( ! is_int($arg + 0) )
		)
		{
			throw new LearnException ('EA_PARAMS',
				LearnException::EXC_ERR_ALL_LOGIC | LearnException::EXC_ERR_ALL_PARAMS);
		}
	}

	return (true);
}