---
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’s `source` is
      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));
          }
          // ...
      }