Simple, performant hot-reloading for Rust.
Requires Rust nightly and only works on Linux and Windows for now.
To install the CLI helper cargo hot-reload:
cargo install --path cargo-hot-reload
To run an example, run cargo hot-reload inside its directory.
Note: initial builds may take a while to complete at first, but will be fast afterwards.
Reloady's performance goal is to hot-reload in under 2 seconds, which it currently achieves.
First, add the dependency to your Cargo.toml (reloady is not published on crates.io yet):
[dependencies]
reloady = { path = "../../reloady" }
Next, add the following features to the top of your lib.rs or main.rs:
#![feature(link_args)]
#![feature(linkage)]
Lastly, annotate any function you would like to hot-reload with the attribute:
#[reloady::hot_reload]
fn hot_reload_me() {
/* ... */
}
And hot reload your code with:
$ cargo hot-reload
Note that functions are only reloaded when they are called, so reloady works best when it is annotating a function that is called in a loop. For more information on this, see examples.
- hot reloads in <2s
- zero-cost when not hot-reloading (compiled out entirely!)
- (coming soon) hot reloading structs/state