Add some documentation

foreach.h

@@ -1,9 +1,11 @@
-#pragma once
-
-// Will determine the size of an array only if it is declared on the stack
-#define foreach(type, item, array) \
-	for (type* item = array; item < array + (sizeof(array) / sizeof(type)); item++)
-
-// Need to pass in the size of the array, since heap allocated arrays don't work with sizeof
-#define foreach_p(type, item, array, size) \
-    for (type* item = array; item < array + size; item++)
+#pragma once
+
+// Will determine the size of an array only if it is declared on the stack
+// Need to dereference the item, as it is a pointer to the current element
+#define foreach(type, item, array) \
+	for (type* item = array; item < array + (sizeof(array) / sizeof(type)); item++)
+
+// Need to pass in the size of the array, since heap allocated arrays don't work with sizeof
+// Need to dereference the item, as it is a pointer to the current element
+#define foreach_p(type, item, array, size) \
+    for (type* item = array; item < array + size; item++)