Rename idiom

README.md

@@ -21,7 +21,7 @@ language.
 * TODO interior mutability - UnsafeCell, Cell, RefCell
 * TODO treating Option like a list
 * TODO `Default` trait
-* [Pass clone to closure](idioms/clone-to-closure.md)
+* [Pass variables to closure](idioms/pass-var-to-closure.md)
 
 ### Design patterns
 

idioms/pass-var-to-closure.md

@@ -1,10 +1,10 @@
-# Pass clone to closure
+# Pass variable to closure
 
 ## Description
 
 By default, closures capture their environment by borrowing. Or you can use `move`-closure
-to move environment. However, often you want to give copy of some data to closure, pass it
-by reference, or perform some other transformation.
+to move whole environment. However, often you want to move just some variables to closure,
+give it copy of some data, pass it by reference, or perform some other transformation.
 
 Use variable rebinding in separate scope for that.