diff --git a/src/prelude.rs b/src/prelude.rs
index 8d946ee..909b14a 100644
--- a/src/prelude.rs
+++ b/src/prelude.rs
@@ -5,3 +5,5 @@ pub use std::{
     collections::{ HashMap as M, HashSet as S },
     cmp::Ordering as Or,
 };
+
+pub type SS = &'static str;