artichoke::preludeTrait Io
Source pub trait Io {
type Error;
// Required method
fn print(&mut self, message: &[u8]) -> Result<(), Self::Error>;
// Provided method
fn puts(&mut self, message: &[u8]) -> Result<(), Self::Error> { ... }
}
Expand description
Perform I/O external to the interpreter.
Concrete error type for errors encountered when reading and writing.
Writes the given bytes to the interpreter stdout stream.
§Errors
If the output stream encounters an error, an error is returned.
Writes the given bytes to the interpreter stdout stream followed by a
newline.
The default implementation uses two calls to print
.
§Errors
If the output stream encounters an error, an error is returned.