Function std::io::empty

1.0.0 (const: unstable) · source · [−]
pub fn empty() -> EmptyⓘNotable traits for Emptyimpl Read for Empty
Expand description

Constructs a new handle to an empty reader.

All reads from the returned reader will return Ok(0).

Examples

A slightly sad example of not reading anything into a buffer:

use std::io::{self, Read};

let mut buffer = String::new();
io::empty().read_to_string(&mut buffer).unwrap();
assert!(buffer.is_empty());
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