example w/bincode metadata

Author: molpopgen

.github/workflows/python.yml

@@ -38,6 +38,9 @@ jobs:
       - name: run JSON metadata example
         run: |
           cargo run --example json_metadata --features derive
+      - name: run bincode metadata example
+        run: |
+          cargo run --example bincode_metadata --features derive
       - name: setup Python and run tests
         run: |
           uv venv -p ${{ matrix.python }}

Cargo.toml

@@ -60,3 +60,7 @@ name = "tree_traversals"
 [[example]]
 name = "json_metadata"
 required-features = ["derive"]
+
+[[example]]
+name = "bincode_metadata"
+required-features = ["derive"]

examples/bincode_metadata.rs

@@ -0,0 +1,51 @@
+#[derive(serde::Serialize, serde::Deserialize, tskit::metadata::MutationMetadata)]
+#[serializer("bincode")]
+struct MutationMetadata {
+    effect_size: f64,
+    dominance: f64,
+}
+
+#[derive(serde::Serialize, serde::Deserialize, tskit::metadata::IndividualMetadata)]
+#[serializer("bincode")]
+struct IndividualMetadata {
+    name: String,
+    phenotypes: Vec<i32>,
+}
+
+fn main() {
+    let ts = make_treeseq().unwrap();
+    ts.dump("with_bincode_metadata.trees", 0).unwrap();
+}
+
+fn make_tables() -> anyhow::Result<tskit::TableCollection> {
+    let mut tables = tskit::TableCollection::new(100.0)?;
+    let pop0 = tables.add_population()?;
+    let ind0 = tables.add_individual_with_metadata(
+        0,
+        None,
+        None,
+        &IndividualMetadata {
+            name: "Jerome".to_string(),
+            phenotypes: vec![0, 1, 2, 0],
+        },
+    )?;
+    let node0 = tables.add_node(tskit::NodeFlags::new_sample(), 0.0, pop0, ind0)?;
+    let site0 = tables.add_site(50.0, Some("A".as_bytes()))?;
+    let _ = tables.add_mutation_with_metadata(
+        site0,
+        node0,
+        tskit::MutationId::NULL,
+        1.0,
+        Some("G".as_bytes()),
+        &MutationMetadata {
+            effect_size: -1e-3,
+            dominance: 0.1,
+        },
+    )?;
+    tables.build_index()?;
+    Ok(tables)
+}
+
+fn make_treeseq() -> anyhow::Result<tskit::TreeSequence> {
+    Ok(make_tables()?.tree_sequence(0)?)
+}