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