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const-ed the "usb" string

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This commit is contained in:
Simon Johnston 2020-08-18 12:35:53 -07:00
parent 4b95734faf
commit dc11634aca
1 changed files with 3 additions and 1 deletions
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4
src/bin/main.rs
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@ -45,6 +45,8 @@ pub(crate) enum SubCommand {
Off,
}
const DEVICE_CONNECTION_USB: &str = "usb";
fn main() -> Result<(), Box<dyn Error>> {
let args = CommandLine::from_args();
@ -59,7 +61,7 @@ fn main() -> Result<(), Box<dyn Error>> {
})
.init();
if args.device == "usb" {
if args.device == DEVICE_CONNECTION_USB {
let discovery = USBDeviceDiscovery::new()?;
let device = discovery.device()?;
debug!("USB device: '{}'", device.id());