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---
source: tests/output.rs
expression: "get_stdout(path, &[\"anyhow::anyhow\"])"
---
anyhow Macro anyhow::anyhow rusty-man
SYNOPSIS
macro_rules! anyhow {
($msg : literal $(,) ?) => { ... };
($err : expr $(,) ?) => { ... };
($fmt : expr, $($arg : tt) *) => { ... };
}
DESCRIPTION
Construct an ad-hoc error from a string or existing non-`anyhow` error value.
This evaluates to an `Error`. It can take either just a string, or a format string with
arguments. It also can take any custom type which implements `Debug` and `Display`.
If called with a single argument whose type implements `std::error::Error` (in addition to
`Debug` and `Display`, which are always required), then that Error impl’
preserved as the `source` of the resulting `anyhow::Error`.
# Example
use anyhow::{anyhow, Result};
fn lookup(key: &str) -> Result<V> {
if key.len() != 16 {
return Err(anyhow!("key length must be 16 characters, got {:?}", key));
}
// ...
}