Remove enumeration support from map

src/eval/array.rs

@@ -181,15 +181,9 @@ impl Array {
 
     /// Transform each item in the array with a function.
     pub fn map(&self, vm: &mut Vm, func: Func) -> SourceResult<Self> {
-        let enumerate = func.argc() == Some(2);
         self.iter()
-            .enumerate()
+            .map(|item| {
-            .map(|(i, item)| {
+                let args = Args::new(func.span(), [item.clone()]);
-                let mut args = Args::new(func.span(), []);
-                if enumerate {
-                    args.push(func.span(), Value::Int(i as i64));
-                }
-                args.push(func.span(), item.clone());
                 func.call_vm(vm, args)
             })
             .collect()

src/eval/func.rs

@@ -73,17 +73,6 @@ impl Func {
         self
     }
 
-    /// The number of positional arguments this function takes, if known.
-    pub fn argc(&self) -> Option<usize> {
-        match &self.repr {
-            Repr::Closure(closure) => closure.argc(),
-            Repr::With(arc) => Some(arc.0.argc()?.saturating_sub(
-                arc.1.items.iter().filter(|arg| arg.name.is_none()).count(),
-            )),
-            _ => None,
-        }
-    }
-
     /// Call the function with the given arguments.
     pub fn call_vm(&self, vm: &mut Vm, mut args: Args) -> SourceResult<Value> {
         match &self.repr {
@@ -346,15 +335,6 @@ impl Closure {
 
         result
     }
-
-    /// The number of positional arguments this closure takes, if known.
-    fn argc(&self) -> Option<usize> {
-        if self.sink.is_some() {
-            return None;
-        }
-
-        Some(self.params.iter().filter(|(_, default)| default.is_none()).count())
-    }
 }
 
 impl From<Closure> for Func {