feat: map() now passes index as first param

Author: harshdoesdev

crates/neko-lang/src/interpreter.rs

@@ -341,7 +341,13 @@ impl Interpreter {
 
             Ok(Value::List(
                 list.iter()
-                    .map(|item| interpreter.call_function(transform, vec![item.clone()]))
+                    .enumerate()
+                    .map(|(index, item)| {
+                        interpreter.call_function(
+                            transform,
+                            vec![Value::Number(index as f64), item.clone()],
+                        )
+                    })
                     .collect::<Result<Vec<Value>, RuntimeError>>()?,
             ))
         });

examples/hello.neko

@@ -1,5 +1,11 @@
+cat = {
+    "name" = "momo",
+}
+
+println(cat["name"])
+
 cats = ["momo", "taro"]
 
-for message in map(cats, fn(cat) => "Hello, #{cat}!") 
+for message in map(cats, fn(_, cat) => "Hello, #{cat}!") 
     println(message)
 end