Crate stderr

stderr

A library that using macro to write to io::stderr() like print!()/println!() for rust.

Usage

On Cargo.toml:

 [dependencies]
 stderr = "0.8.0"

About stderr

Usage as same as print!/println!.

1. err!/errln!: Panics if writing to io::stderr() fails.
2. errst!/errstln!: Do nothing if writing to io::stderr() fails(silent->st).

Example

#[macro_use]
extern crate stderr;

fn main() {
  println!("err!/errln!/errst!/errstln!()@stderr !");
  let vec = vec![1, 2, 3, 4, 5];
  let s = std::env::args().nth(0).unwrap();

  err!("err!(expr\\n)\n");
  err!("err!(String: vec![1, 2, 3, 4, 5])\n{}: {:?}", s, vec);
  errln!();
  errln!("errln!(expr)");

  println!();

  errst!("errst!(expr\\n)\n");
  errst!("errst!(String: vec![1, 2, 3, 4, 5])\n{}: {:?}", s, vec);
  errstln!();
  errstln!("errstln!(expr)");
}

If you only need errxxx and don’t want be polluted by other macros, you can:

• use v0.3.0(The part has been stable since this version)

On Cargo.toml:

  [dependencies]
  stderr = "0.3.0"

Or

• Only import you need by macro_use

On Code:

  #[macro_use(err,errln,errst,errstln)]
  extern crate stderr;

About stderr::StaticMut

StaticMut: Internal variability for Lazystatic

Modules

log

log module

Macros

db

dbln

dbst

dbstln

debug

Equal to db!()

debugln

Equal to dbln!()

err

print!() for stderr

errln

println!() for stderr

error

errorln

errst

print!() without unwrap() for stderr

errstln

println!() without unwrap() for stderr

fatal

write the LogMsg to stderr and panic with the LogMsg

fataln

write the LogMsg to stderr and panic with the LogMsg

info

infoln

initDeprecated

Equal to logger_init!()

loc

Get location(module_path:line:column)

logger_init

Equal to Logger::init(pkg!())

pkg

Get crate name

warn

warnln

Structs

StaticMut

Internal variability for Lazystatic