Procedurals
Collection of basic proc-macros
EnumError
extern crate procedurals;
use ;
// EnumError derives From<*>, fmt::Display and error::Error
Collection of basic proc-macros
#[macro_use]
extern crate procedurals;
use std::{io, fmt};
#[derive(Debug, EnumError)] // EnumError derives From<*>, fmt::Display and error::Error
pub enum Error {
IO(io::Error),
Fmt(fmt::Error),
}
fn io_error() -> Result<(), io::Error> {
Ok(())
}
fn fmt_error() -> Result<(), fmt::Error> {
Ok(())
}
fn merged_error() -> Result<(), Error> {
io_error()?;
fmt_error()?;
Ok(())
}