feat: stash

src/ty/internal/attrset.rs

@@ -1,15 +1,15 @@
 use std::cell::RefCell;
 use std::sync::Arc;
 
-use anyhow::Result;
 use derive_more::Constructor;
 use rpds::HashTrieMapSync;
 
+use crate::error::Result;
+use crate::vm::VM;
+
 use super::super::common::Symbol;
 use super::super::public as p;
-
 use super::{ToPublic, Value};
-use crate::vm::VM;
 
 #[derive(Debug, Constructor, Clone, PartialEq)]
 pub struct AttrSet {
@@ -28,7 +28,7 @@ impl AttrSet {
     }
 
     pub fn push_attr(&mut self, sym: Symbol, val: Value) {
-        if self.data.get(&sym).is_some() {
+        if let Some(_) = self.data.get_mut(&sym) {
             todo!()
         }
         self.data.insert_mut(sym, val);