Added example of timer #356
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epage
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Mar 28, 2025
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| //! ## Using the Logger as a Timer | ||
| //! | ||
| //! `env_logger` can also be used as a timer by moving an initial | ||
| //! timestamp into the closure defining a custom format: | ||
| //! | ||
| //! ``` | ||
| //! use std::io::Write; | ||
| //! | ||
| //! let start = std::time::Instant::now(); | ||
| //! env_logger::builder() | ||
| //! .format(move |buf, record| { | ||
| //! writeln!(buf, "{} ({}): {}", record.level(), start.elapsed().as_millis(), record.args()) | ||
| //! }) | ||
| //! .init(); | ||
| //! ``` | ||
| //! |
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I was assuming this would be created as another example in examples/. The advantage of this is its easier to interactively play with to see the results.
If its being added to the docs, putting it on Builder::format might be a better approach.
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So sorry to disappoint your expectations 😆.
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