Read/write config files with get/set and dirty-tracking; save() writes all changes at once
cargo add rwconfig//! Demo: RWConfig getter/setter pattern.
//!
//! Loads a config file, reads values via `get()`, modifies via `set()` (which marks dirty),
//! and persists all changes with a single `save()`.
use rwconfig::RWConfig;
use serde_json::json;
fn main() -> std::io::Result<()> {
let path = "fixtures/test.config.json";
let mut cfg = RWConfig::from_file(path)?;
// Read value by dot-path (getter semantics)
let a = cfg.get("a").and_then(|v| v.as_i64()).unwrap_or(0);
println!("a = {}", a);
// Write values (setter semantics — each set marks config dirty)
cfg.set("a", json!(42))?;
cfg.set("b", json!(100))?;
println!("dirty = {}", cfg.is_dirty());
// Persist all changes to disk; no-op if not dirty
cfg.save()?;
println!("saved.");
Ok(())
}Published under the Apache-2.0 license.
Made by @UnRUST 💛
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