File change events.

[3Hren]

Seems like there is no way to subscribe for filesystem changes.

For example to implement tail-like program, I need to watch over some specified file and reread it on write event.

According to this libuv has already wrapped common file change notification libraries, so I don't think it will consume significant amount of time to write another wrapper for that libuv functionality.

[keeperofdakeys]

From what I know, librustuv (the libuv bindings) are queued to be removed from libstd with libgreen, since it only ever provided features in tandem with it. So you probably can't use the libuv route.

[MatejLach]

Isn't this being moved to Cargo?

[thestinger]

Rust is no longer using libuv.

[kmcallister]

With libuv gone there is no reason for this to be in the stdlib. There are a few file change notification libraries on crates.io already.