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
init	[ Deprecated ] 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