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| author | Brian Anderson <banderson@mozilla.com> | 2012-01-20 01:04:36 -0800 |
|---|---|---|
| committer | Brian Anderson <banderson@mozilla.com> | 2012-01-20 01:06:26 -0800 |
| commit | 341540b6948c535265ae2e9b061c23fc4978c63d (patch) | |
| tree | 184d7546d786574a0de51610903db0833f3ef570 | |
| parent | 2d9910383e35735239b40649ae3de8e78278e14f (diff) | |
| download | rust-341540b6948c535265ae2e9b061c23fc4978c63d.tar.gz rust-341540b6948c535265ae2e9b061c23fc4978c63d.zip | |
doc: Mention 'debug' log level in tutorial. Closes #1579
| -rw-r--r-- | doc/tutorial.md | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/tutorial.md b/doc/tutorial.md index 2a3e73d3554..179f0ccdbb8 100644 --- a/doc/tutorial.md +++ b/doc/tutorial.md @@ -744,8 +744,8 @@ log(warn, "hi"); log(error, (1, [2.5, -1.8])); ~~~~ -The first argument is the log level (levels `info`, `warn`, and -`error` are predefined), and the second is the value to log. By +The first argument is the log level (levels `debug`, `info`, `warn`, +and `error` are predefined), and the second is the value to log. By default, you *will not* see the output of that first log statement, which has `warn` level. The environment variable `RUST_LOG` controls which log level is used. It can contain a comma-separated list of @@ -753,7 +753,7 @@ paths for modules that should be logged. For example, running `rustc` with `RUST_LOG=rustc::front::attr` will turn on logging in its attribute parser. If you compile a program named `foo.rs`, its top-level module will be called `foo`, and you can set `RUST_LOG` to -`foo` to enable `warn` and `info` logging for the module. +`foo` to enable `warn`, `info` and `debug` logging for the module. Turned-off `log` statements impose minimal overhead on the code that contains them, so except in code that needs to be really, really fast, |