some doc block corrections as well a !! to (bool) convertion

remove nonsense default value

lib/Cake/Utility/Folder.php

@@ -634,7 +634,7 @@ public function delete($path = null) {
  * @return boolean Success
  * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#Folder::copy
  */
-	public function copy($options = array()) {
+	public function copy($options) {
 		if (!$this->pwd()) {
 			return false;
 		}

lib/Cake/Utility/Set.php

@@ -203,7 +203,7 @@ public static function numeric($array = null) {
  *
  * $list defaults to 0 = no 1 = yes if param is not passed
  *
- * @param array $select Key in $list to return
+ * @param string $select Key in $list to return
  * @param array|string $list can be an array or a comma-separated list.
  * @return string the value of the array key or null if no match
  * @link http://book.cakephp.org/2.0/en/core-utility-libraries/set.html#Set::enum
@@ -467,7 +467,7 @@ public static function matches($conditions, $data = array(), $i = null, $length
 			return true;
 		}
 		if (is_string($conditions)) {
-			return !!Set::extract($conditions, $data);
+			return (bool)Set::extract($conditions, $data);
 		}
 		foreach ($conditions as $condition) {
 			if ($condition === ':last') {

lib/Cake/Utility/Validation.php

@@ -321,7 +321,7 @@ public static function date($check, $format = 'ymd', $regex = null) {
  * Validates a datetime value
  * All values matching the "date" core validation rule, and the "time" one will be valid
  *
- * @param array $check Value to check
+ * @param string $check Value to check
  * @param string|array $dateFormat Format of the date part
  * Use a string or an array of the keys below. Arrays should be passed as array('dmy', 'mdy', etc)
  * ## Keys:
@@ -381,7 +381,7 @@ public static function boolean($check) {
  * - true => Any number of decimal places greater than 0, or a float|double. The '.' is required.
  * - 1..N => Exactly that many number of decimal places. The '.' is required.
  *
- * @param integer $check The value the test for decimal
+ * @param float $check The value the test for decimal
  * @param integer $places
  * @param string $regex If a custom regular expression is used, this is the only validation that will occur.
  * @return boolean Success