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Update docs and demo in "Using sqlite-vec in Rust" #244

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90f9b0c
update docs
flaribbit Sep 20, 2025
94fcd77
update demo
flaribbit Sep 20, 2025
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10 changes: 5 additions & 5 deletions examples/simple-rust/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,10 @@ name = "sqlite-vec-demo"
edition = "2021"

[dependencies]
sqlite-vec={version="0.0.1-alpha.7"}
rusqlite = {version="0.31.0", features=["bundled"]}
zerocopy = "0.7.33"
sqlite-vec = "0.1.6"
rusqlite = { version = "0.37.0", features = ["bundled"] }
zerocopy = "0.8.27"

[[bin]]
name="demo"
path="demo.rs"
name = "demo"
path = "demo.rs"
2 changes: 1 addition & 1 deletion examples/simple-rust/demo.rs
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@@ -1,6 +1,6 @@
use rusqlite::{ffi::sqlite3_auto_extension, Connection, Result};
use sqlite_vec::sqlite3_vec_init;
use zerocopy::AsBytes;
use zerocopy::IntoBytes;

fn main() -> Result<()> {
unsafe {
Expand Down
11 changes: 6 additions & 5 deletions site/using/rust.md
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Expand Up @@ -29,9 +29,9 @@ Then, you can verify your installation was successful by embedding your first ve
```rs
use sqlite_vec::sqlite3_vec_init;
use rusqlite::{ffi::sqlite3_auto_extension, Result};
use zerocopy::AsBytes;
use zerocopy::IntoBytes;

fn main()-> Result<()> {
fn main() -> Result<()> {
unsafe {
sqlite3_auto_extension(Some(std::mem::transmute(sqlite3_vec_init as *const ())));
}
Expand All @@ -40,7 +40,7 @@ fn main()-> Result<()> {
let v: Vec<f32> = vec![0.1, 0.2, 0.3];

let (vec_version, embedding): (String, String) = db.query_row(
"select vec_version(), vec_to_json(?)",
"SELECT vec_version(), vec_to_json(?)",
&[v.as_bytes()],
|x| Ok((x.get(0)?, x.get(1)?)),
)?;
Expand All @@ -56,10 +56,11 @@ for a more complete Rust demo.

## Working with vectors in Rust

If your vectors are provided as a `Vec<f32>` type, the [`zerocopy` crate](https://crates.io/crates/zerocopy) is recommended, specifically `zerocopy::AsBytes`. This will allow you to pass in vectors into `sqlite-vec` without any copying.
If your vectors are provided as a `Vec<f32>` type, the [`zerocopy` crate](https://crates.io/crates/zerocopy) is recommended, specifically `zerocopy::IntoBytes::as_bytes()`. This will allow you to pass in vectors into `sqlite-vec` without any copying.

```rs
let query: Vec<f32> = vec![0.1, 0.2, 0.3, 0.4];
let mut stmt = db.prepare("SELECT vec_length(?)")?;
stmt.execute(&[item.1.as_bytes()])?;
let len: usize = stmt.query_one(&[query.as_bytes()], |row| row.get(0))?;
println!("length={}", len);
```