diff --git a/SLS_Rust/sls/src/hash_table.rs b/SLS_Rust/sls/src/hash_table.rs
deleted file mode 100644
index 1843518..0000000
--- a/SLS_Rust/sls/src/hash_table.rs
+++ /dev/null
@@ -1,25 +0,0 @@
-use std::collections::HashMap;
-use crate::types::Value;
-
-#[derive(Debug, Default)]
-pub struct HashTable {
-    pub map: HashMap<String, Value>,
-}
-
-impl HashTable {
-    pub fn new() -> Self {
-        HashTable { map: HashMap::new() }
-    }
-
-    pub fn get(&self, key: &str) -> Option<&Value> {
-        self.map.get(key)
-    }
-
-    pub fn set(&mut self, key: String, val: Value) {
-        self.map.insert(key, val);
-    }
-
-    pub fn remove(&mut self, key: &str) -> Option<Value> {
-        self.map.remove(key)
-    }
-}
diff --git a/SLS_Rust/sls/src/main.rs b/SLS_Rust/sls/src/main.rs
index ece9f37..2f58513 100644
--- a/SLS_Rust/sls/src/main.rs
+++ b/SLS_Rust/sls/src/main.rs
@@ -1,7 +1,5 @@
 mod types;
 mod errors;
-mod hash_table;
-mod sls_string;
 mod file;
 mod lexer;
 mod interpreter;
diff --git a/SLS_Rust/sls/src/sls_string.rs b/SLS_Rust/sls/src/sls_string.rs
deleted file mode 100644
index ae49a2e..0000000
--- a/SLS_Rust/sls/src/sls_string.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-use crate::types::SlsStr;
-
-pub fn from_str(s: &str) -> SlsStr {
-    s.to_string()
-}
-
-pub fn concat(a: &SlsStr, b: &SlsStr) -> SlsStr {
-    let mut r = a.clone();
-    r.push_str(b);
-    r
-}
diff --git a/SLS_Rust/sls/src/types.rs b/SLS_Rust/sls/src/types.rs
index 658a971..5cfd6f4 100644
--- a/SLS_Rust/sls/src/types.rs
+++ b/SLS_Rust/sls/src/types.rs
@@ -1,14 +1,12 @@
 use std::collections::HashMap;
 
-pub type SlsStr = String;
-
 #[derive(Debug, Clone)]
 pub enum Value {
     Nil,
     Bool(bool),
     Int(i64),
     Float(f64),
-    Str(SlsStr),
+    Str(String),
     Object(HashMap<String, Value>),
     Function(String),
 }