X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=framework%2Fmain%2Finterfaces%2Fstacker%2Fclass_Stackable.php;h=79199068ebbcbb32ee5efb0867be0ae8ef1d9d0c;hb=3b182d1633e936618e118773da67fa41b24a6109;hp=c2574b4b46c5faf68004f3e9c2df4db883c917fb;hpb=84ca76444c3cc19221f5a4414b10b48e5bb14b76;p=core.git

diff --git a/framework/main/interfaces/stacker/class_Stackable.php b/framework/main/interfaces/stacker/class_Stackable.php
index c2574b4b..79199068 100644
--- a/framework/main/interfaces/stacker/class_Stackable.php
+++ b/framework/main/interfaces/stacker/class_Stackable.php
@@ -36,7 +36,7 @@ interface Stackable extends FrameworkInterface {
 	 * @return	void
 	 * @throws	StackerFullException	If the stacker is full
 	 */
-	function pushNamed ($stackerName, $value);
+	function pushNamed (string $stackerName, $value);
 
 	/**
 	 * 'Pops' a value from a named stacker and returns it's value
@@ -46,7 +46,7 @@ interface Stackable extends FrameworkInterface {
 	 * @throws	NoStackerException	If the named stacker was not found
 	 * @throws	EmptyStackerException	If the named stacker is empty
 	 */
-	function popNamed ($stackerName);
+	function popNamed (string $stackerName);
 
 	/**
 	 * Get value from named stacker but don't "pop" it
@@ -56,7 +56,7 @@ interface Stackable extends FrameworkInterface {
 	 * @throws	NoStackerException	If the named stacker was not found
 	 * @throws	EmptyStackerException	If the named stacker is empty
 	 */
-	function getNamed ($stackerName);
+	function getNamed (string $stackerName);
 
 	/**
 	 * Checks whether the given stack is initialized (set in array $stackers)
@@ -64,7 +64,7 @@ interface Stackable extends FrameworkInterface {
 	 * @param	$stackerName	Name of the stack
 	 * @return	$isInitialized	Whether the stack is initialized
 	 */
-	function isStackInitialized ($stackerName);
+	function isStackInitialized (string $stackerName);
 
 	/**
 	 * Checks whether the given stack is empty
@@ -73,6 +73,6 @@ interface Stackable extends FrameworkInterface {
 	 * @return	$isEmpty			Whether the stack is empty
 	 * @throws	NoStackerException	If given stack is missing
 	 */
-	function isStackEmpty ($stackerName);
+	function isStackEmpty (string $stackerName);
 
 }