cfg_log 0.1.0

Compile time conditional logging
Documentation 
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cfg_log
=======

Compile time conditional logging.

[![GitHub](https://img.shields.io/static/v1?label=github&message=FedericoStra/cfg_log&color=brightgreen&logo=github)](https://github.com/FedericoStra/cfg_log)
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![Lines of code](https://tokei.rs/b1/github/FedericoStra/cfg_log?category=code)

## Usage

The main crate should depend on `cfg_log` and optionally on `log`.

```toml
[dependencies]
cfg_log = "0.1.0"
log = { version = "0.4.17", optional = true }
```

Then logging can be done more concisely with

```rust
use cfg_log::*;

fn main() {
    debug!("the answer is {}", 42);
}
```

instead of

```rust
#[cfg(feature = "log")]
use log::*;

fn main() {
    #[cfg(feature = "log")]
    debug!("the answer is {}", 42);
}
```

The `debug!` macro will automatically expand to `log::debug!` if the `log` feature is enabled,
or it will be discarded at compile time otherwise.

See [test_cfg_log](https://github.com/FedericoStra/cfg_log/tree/master/test_cfg_log) for an example package.