5 files changed, 21 insertions, 28 deletions
diff --git a/src/commands/meme/create.rs b/src/commands/meme/create.rs
index ef6090e..2cd9465 100644
--- a/src/commands/meme/create.rs
+++ b/src/commands/meme/create.rs
@@ -156,7 +156,7 @@ pub async fn addaudiomeme(ctx: &Context, msg: &Message, args: Args) -> CommandRe
         .arg("-i")
         .arg(youtube_url)
         .args(duration_opts)
-        .args(&[
+        .args([
             "-ac", "2", "-ar", "48000", "-f", "opus", "-acodec", "libopus", "-b:a", "96k", "-fs",
             "5M", "-",
         ])
diff --git a/src/commands/meme/history.rs b/src/commands/meme/history.rs
index 33a2de2..e2953d1 100644
--- a/src/commands/meme/history.rs
+++ b/src/commands/meme/history.rs
@@ -128,7 +128,7 @@ pub async fn history(ctx: &Context, msg: &Message, mut args: Args) -> CommandRes
         InvocationRecord::last_n(&mut conn, n)?
     };
 
-    if records.len() == 0 {
+    if records.is_empty() {
         info!("no memes in history");
         return util::send(ctx, msg.channel_id, "i don't remember anything :(", msg.tts)
             .map_err(CommandError::from)
@@ -393,7 +393,7 @@ pub async fn query(ctx: &Context, msg: &Message, mut args: Args) -> CommandResul
         })
         .join("\n");
 
-    if result.len() == 0 {
+    if result.is_empty() {
         info!("no memes matched query");
 
         return util::send(ctx, msg.channel_id, "no match".to_owned(), msg.tts)
diff --git a/src/commands/meme/invoke.rs b/src/commands/meme/invoke.rs
index 13996da..2db9e83 100644
--- a/src/commands/meme/invoke.rs
+++ b/src/commands/meme/invoke.rs
@@ -76,7 +76,7 @@ async fn _meme(
     args: Args,
     audio_playback: AudioPlayback,
 ) -> CommandResult {
-    if args.len() == 0 || audio_playback != AudioPlayback::Optional {
+    if args.is_empty() || audio_playback != AudioPlayback::Optional {
         return rand_meme(ctx, msg, audio_playback).await;
     }
 
@@ -133,18 +133,15 @@ async fn rand_meme(
             Ok(())
         },
         Err(e) => {
-            match e.downcast_ref::<DieselError>() {
-                Some(NotFound) => {
-                    info!("random meme not found");
-                    return util::send(ctx, message.channel_id, "i don't know any :(", message.tts)
-                        .map_err(CommandError::from)
-                        .await;
-                },
-                _ => {},
+            if let Some(NotFound) = e.downcast_ref::<DieselError>() {
+                info!("random meme not found");
+                return util::send(ctx, message.channel_id, "i don't know any :(", message.tts)
+                    .map_err(CommandError::from)
+                    .await;
             }
 
             util::send(ctx, message.channel_id, "HELP", message.tts).await?;
-            return Err(e.into());
+            Err(e.into())
         },
     }
 }
@@ -163,14 +160,11 @@ pub async fn rare_meme(ctx: &Context, msg: &Message, _args: Args) -> CommandResu
             send_meme(ctx, &meme, &mut conn, msg).await
         },
         Err(e) => {
-            match e.downcast_ref::<DieselError>() {
-                Some(NotFound) => {
-                    info!("rare meme not found");
-                    return util::send(ctx, msg.channel_id, "i don't know any :(", msg.tts)
-                        .map_err(CommandError::from)
-                        .await;
-                },
-                _ => {},
+            if let Some(NotFound) = e.downcast_ref::<DieselError>() {
+                info!("rare meme not found");
+                return util::send(ctx, msg.channel_id, "i don't know any :(", msg.tts)
+                    .map_err(CommandError::from)
+                    .await;
             }
 
             util::send(ctx, msg.channel_id, "THE MEME MARKET IS IN FREEFALL", msg.tts)
diff --git a/src/commands/meme/mod.rs b/src/commands/meme/mod.rs
index fe69b1c..c40e80a 100644
--- a/src/commands/meme/mod.rs
+++ b/src/commands/meme/mod.rs
@@ -74,7 +74,7 @@ async fn send_meme(
     msg: &Message,
 ) -> CommandResult {
     let should_tts =
-        t.content.as_ref().map(|t| t.len() > 0).unwrap_or(false) && random::<u32>() % 25 == 0;
+        t.content.as_ref().map(|t| !t.is_empty()).unwrap_or(false) && random::<u32>() % 25 == 0;
 
     debug!("sending meme (tts: {}): {:?}", should_tts, t);
 
@@ -85,7 +85,7 @@ async fn send_meme(
         let ret = CreateMessage::default().tts(should_tts);
 
         match t.content {
-            Some(ref text) if text.len() > 0 => ret.content(text),
+            Some(ref text) if !text.is_empty() => ret.content(text),
             _ => ret,
         }
     };
@@ -98,11 +98,10 @@ async fn send_meme(
             msg.channel_id.send_files(ctx, vec![att], cmsg).await?;
         },
 
-        None => match t.content {
-            Some(_) => {
+        None => {
+            if t.content.is_some() {
                 msg.channel_id.send_message(ctx, cmsg).await?;
-            },
-            None => {},
+            }
         },
     };
 
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index 3f69a3b..8eac09c 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -36,7 +36,7 @@ pub fn register_commands(f: StandardFramework) -> StandardFramework {
 
     result.help(&help::HELP).unrecognised_command(|ctx, msg, unrec| {
         Box::pin(async move {
-            let url = match msg.content.split_whitespace().skip(1).next() {
+            let url = match msg.content.split_whitespace().nth(1) {
                 Some(x) if x.starts_with("http") => x,
                 _ => {
                     info!("bad command formatting: '{}'", unrec);