Scaffoling for LazyGroupBy

.gitignore

@@ -1,4 +1,5 @@
 debug/
 /target/
 target/
-.DS_Store
+.DS_Store
+pkg/

Cargo.toml

@@ -5,6 +5,9 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
+[lib]
+crate-type = ["cdylib", "rlib"]
+
 [dependencies]
 ahash = "0.8.3"
 arrow2 = { version = "0.17.1", features = [  
@@ -25,3 +28,8 @@ rand = "0.8.5"
 rayon = "1.7.0"
 smartstring = "1.0.1"
 xxhash-rust = { version = "0.8.6", features = ["xxh3"] }
+wasm-bindgen = "0.2.63"
+wee_alloc = { version = "0.4.5", optional = true }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.3.13"

src/chunked_array/sort_test.rs

@@ -43,7 +43,7 @@ mod sort_i32 {
         let arr = ChunkedArray::new("s", &vec![12, 1, 5, 8]);
         let sorted = arr.sort(true);
         println!("arr: {:?}", &sorted);
-        assert_eq!(sorted.to_vec(), vec![1, 5, 8, 12]);
+        assert_eq!(sorted.to_vec(), vec![12, 8, 5, 1]);
     }
 
     #[test]

src/dataframe/groupby/mod.rs

@@ -20,15 +20,9 @@ mod mod_test;
 use super::DataFrame;
 
 #[derive(Debug)]
-pub enum GroupsProxy {
-    Idx(GroupsIdx),
-    Slice,
-}
-
-#[derive(Debug)]
-pub struct GroupsIdx {
-    first: Vec<u32>,
-    all: Vec<Vec<u32>>,
+pub struct GroupsProxy {
+    pub first: Vec<u32>,
+    pub all: Vec<Vec<u32>>,
 }
 
 impl DataFrame {
@@ -87,10 +81,10 @@ impl DataFrame {
             })
             .collect();
         let (first_indices, grouped_indices) = join_group_indices(tuples);
-        GroupsProxy::Idx(GroupsIdx {
+        GroupsProxy {
             first: first_indices,
             all: grouped_indices,
-        })
+        }
     }
 }
 

src/dataframe/mod.rs

@@ -99,7 +99,11 @@ impl DataFrame {
     }
 
     pub fn get_index_with_name(&self, name: &str) -> usize {
-        self.columns.iter().position(|c| c.name() == name).unwrap()
+        let col = self.columns.iter().position(|c| c.name() == name);
+        if col.is_none() {
+            panic!("column not found for name: {name}");
+        }
+        col.unwrap()
     }
 
     // For now, makes all the chunks

src/js_little_dataframe/mod.rs

@@ -0,0 +1,11 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub fn greet() {
+    alert("Hello, wasm-game-of-life!");
+}

src/js_little_dataframe/test.ts

@@ -0,0 +1,4 @@
+import * as Foo from "../../pkg"
+
+const foo = "bar"
+console.log("YO")