Some clippy improvements

src/bin/lasp_devinfo.rs

@@ -14,7 +14,7 @@ struct Args {
 
 fn main() -> Result<()> {
     let args = Args::parse();
-    let write_all = args.matches.len() == 0;
+    let write_all = args.matches.is_empty();
     let mut smgr = StreamMgr::new();
 
     // Obtain list of devices
@@ -27,15 +27,15 @@ fn main() -> Result<()> {
 
         // If no device name strings are given, we are outputting them all to a file.
         if write_all {
-            let daqconfig = DaqConfig::newFromDeviceInfo(&dev);
+            let daqconfig = DaqConfig::newFromDeviceInfo(dev);
             daqconfig.serialize_TOML_file(&filename.clone().into())?;
         } else {
             // See if we find the name in the match list.
             for m in args.matches.iter() {
                 let needle = m.to_lowercase();
-                let dev_lower = (&dev.device_name).to_lowercase();
+                let dev_lower = dev.device_name.to_lowercase();
                 if dev_lower.contains(&needle) {
-                    DaqConfig::newFromDeviceInfo(&dev)
+                    DaqConfig::newFromDeviceInfo(dev)
                         .serialize_TOML_file(&filename.clone().into())?;
                 }
             }

src/bin/lasp_outputdefault.rs

@@ -1,6 +1,6 @@
 use anyhow::Result;
 use crossbeam::channel::{unbounded, Receiver, TryRecvError};
-use lasprs::daq::{InStreamMsg, StreamHandler, StreamMgr, StreamStatus, StreamType};
+use lasprs::daq::{StreamMgr, StreamStatus, StreamType};
 use lasprs::siggen::Siggen;
 use std::io;
 use std::{thread, time};
@@ -11,7 +11,7 @@ fn spawn_stdin_channel() -> Receiver<String> {
     thread::spawn(move || 'tt: loop {
         let mut buffer = String::new();
         io::stdin().read_line(&mut buffer).unwrap();
-        if let Err(_) = tx.send(buffer) {
+        if tx.send(buffer).is_err() {
             break 'tt;
         }
     });

src/daq/streamcmd.rs

@@ -1,7 +1,7 @@
 //! Provides stream messages that come from a running stream
 use crate::config::*;
 use crate::daq::Qty;
-use crate::siggen::Siggen;
+use crate::siggen::{Siggen, Source};
 use anyhow::{bail, Result};
 use crossbeam::channel::Sender;
 use std::any::TypeId;