58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
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use rusqlite::{Connection, Result};
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#[cfg(all(target_family = "wasm", target_os = "unknown"))]
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use wasm_bindgen::prelude::wasm_bindgen;
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#[cfg(all(target_family = "wasm", target_os = "unknown"))]
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#[wasm_bindgen]
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extern "C" {
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#[wasm_bindgen(js_namespace = console)]
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fn log(s: &str);
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}
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#[cfg(all(target_family = "wasm", target_os = "unknown"))]
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macro_rules! println {
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($($t:tt)*) => (log(&format_args!($($t)*).to_string()))
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}
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struct Person {
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id: i32,
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name: String,
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}
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#[cfg_attr(all(target_family = "wasm", target_os = "unknown"), wasm_bindgen(main))]
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fn main() -> Result<()> {
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let conn = Connection::open_in_memory()?;
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conn.execute(
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"CREATE TABLE IF NOT EXISTS persons (
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id INTEGER PRIMARY KEY,
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name TEXT NOT NULL
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)",
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(), // empty list of parameters.
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)?;
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conn.execute(
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"INSERT INTO persons (name) VALUES (?1), (?2), (?3)",
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["Steven", "John", "Alex"].map(|n| n.to_string()),
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)?;
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let mut stmt = conn.prepare("SELECT id, name FROM persons")?;
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let rows = stmt.query_map([], |row| {
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Ok(Person {
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id: row.get(0)?,
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name: row.get(1)?,
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})
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})?;
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println!("Found persons:");
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for person in rows {
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match person {
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Ok(p) => println!("ID: {}, Name: {}", p.id, p.name),
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Err(e) => eprintln!("Error: {e:?}"),
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}
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}
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Ok(())
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}
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