feat: usable?

src/ty/internal/list.rs

@@ -1,10 +1,11 @@
+use anyhow::Result;
 use derive_more::Constructor;
 use rpds::VectorSync;
 
 use crate::ty::public as p;
 
-use crate::vm::VM;
 use super::{ToPublic, Value};
+use crate::vm::VM;
 
 #[derive(Debug, Constructor, Clone, PartialEq)]
 pub struct List {
@@ -14,7 +15,7 @@ pub struct List {
 impl List {
     pub fn empty() -> List {
         List {
-            data: VectorSync::new_sync()
+            data: VectorSync::new_sync(),
         }
     }
 
@@ -28,6 +29,16 @@ impl List {
         }
         self
     }
+
+    pub fn force_deep(&mut self, vm: &VM) -> Result<()> {
+        let mut vec: Vec<_> = self.data.iter().cloned().collect();
+        vec.iter_mut()
+            .map(|v| v.force_deep(vm).map(|_| ()))
+            .find(|v| matches!(v, Err(_)))
+            .map_or(Ok(()), |err| err)?;
+        self.data = vec.into_iter().collect();
+        Ok(())
+    }
 }
 
 impl ToPublic for List {