add ->? function to std

docs/base/std.md

@@ -354,6 +354,11 @@
     -
 
 
+### `->? ::: -> `
+
+    -
+
+
 ### `_float ::: -> `
 
     -

docs/std.md

@@ -404,6 +404,11 @@ over type definitions, to string processing.
     Makes a reference to object
 
 
+### `->? ::: object -> reference`
+
+    Makes a reference to object
+
+
 ### `neg ::: a -> math(-a)`
 
     Returns the negative of a

std.isbpl

@@ -192,6 +192,9 @@ func reference {
     this =? 
     this
 }
+func ->? {
+    reference
+}
 
 func _string {
     def object =object