tokio 0.2.13

An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications.
Documentation 
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use crate::fs::asyncify;

use std::{io, path::Path};

/// Creates a future that will open a file for writing and write the entire
/// contents of `contents` to it.
///
/// This is the async equivalent of `std::fs::write`.
///
/// # Examples
///
/// ```no_run
/// use tokio::fs;
///
/// # async fn dox() -> std::io::Result<()> {
/// fs::write("foo.txt", b"Hello world!").await?;
/// # Ok(())
/// # }
/// ```
pub async fn write<C: AsRef<[u8]> + Unpin>(path: impl AsRef<Path>, contents: C) -> io::Result<()> {
    let path = path.as_ref().to_owned();
    let contents = contents.as_ref().to_owned();

    asyncify(move || std::fs::write(path, contents)).await
}