pub use std::io::{ErrorKind, Result};
pub trait MapNonBlock<T> {
#[allow(dead_code)]
fn map_non_block(self) -> Result<Option<T>>;
}
impl<T> MapNonBlock<T> for Result<T> {
fn map_non_block(self) -> Result<Option<T>> {
use std::io::ErrorKind::WouldBlock;
match self {
Ok(value) => Ok(Some(value)),
Err(err) => {
if let WouldBlock = err.kind() {
Ok(None)
} else {
Err(err)
}
}
}
}
}