Macro snapbox_macros::eprint
source · macro_rules! eprint { ($($arg:tt)*) => { ... }; }
Available on crate feature
color
only.Expand description
Prints to stderr
.
Equivalent to the print!
macro, except that output goes to
stderr
instead of stdout
. See print!
for
example usage.
Use eprint!
only for error and progress messages. Use print!
instead for the primary output of your program.
NOTE: Not all eprint!
calls will be captured in tests like std::eprint!
- Capturing will automatically be activated in test binaries
- Otherwise, only when the
test
feature is enabled
§Panics
Panics if writing to stderr
fails for any reason except broken pipe.
Writing to non-blocking stdout can cause an error, which will lead this macro to panic.
§Examples
use anstream::eprint;
eprint!("Error: Could not complete task");