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Explain use of debug\! in tutorial

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Dan Luu 2013-04-17 11:51:43 -04:00
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doc/tutorial.md
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@ -1669,6 +1669,9 @@ do spawn {
}
~~~~
If you want to see the output of `debug!` statements, you will need to turn on `debug!` logging.
To enable `debug!` logging, set the RUST_LOG environment variable to `debug` (e.g., with bash, `export RUST_LOG=debug`)
## For loops
The most common way to express iteration in Rust is with a `for`