diff --git a/src/lib.rs b/src/lib.rs
index eb24b06..86b694f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -20,6 +20,10 @@ pub use julid::Julid;
 /// This `unsafe extern "C"` function is the main entry point into the loadable
 /// SQLite extension. By default, it and the `plugin` module it depends on will
 /// not be built. Build with `cargo build --features plugin`
+///
+/// # Safety
+/// This is FFI; it's inherently unsafe. But this function is called by
+/// sqlite, not by a user, so it should be OK.
 #[cfg(feature = "plugin")]
 #[no_mangle]
 pub unsafe extern "C" fn sqlite3_julid_init(
@@ -40,7 +44,7 @@ pub unsafe extern "C" fn sqlite3_julid_init(
 pub mod sqlite_plugin {
     use sqlite_loadable::{
         api, define_scalar_function,
-        prelude::{sqlite3, sqlite3_context, sqlite3_value, FunctionFlags},
+        prelude::{sqlite3_context, sqlite3_value, FunctionFlags},
         Result,
     };
 
@@ -92,7 +96,7 @@ pub mod sqlite_plugin {
     /// 01HJSHZ0PN000EKP3H94R6TPWH
     /// ```
     pub fn julid_string(context: *mut sqlite3_context, id: &[*mut sqlite3_value]) -> Result<()> {
-        if let Some(value) = id.get(0) {
+        if let Some(value) = id.first() {
             let id = api::value_blob(value);
             let bytes: [u8; 16] = id.try_into().map_err(|_| {
                 sqlite_loadable::Error::new_message("Could not convert given value to Julid")
@@ -116,7 +120,7 @@ pub mod sqlite_plugin {
     /// 2023-07-27 17:47:50
     /// ```
     pub fn julid_seconds(context: *mut sqlite3_context, id: &[*mut sqlite3_value]) -> Result<()> {
-        if let Some(value) = id.get(0) {
+        if let Some(value) = id.first() {
             let id = api::value_blob(value);
             let bytes: [u8; 16] = id.try_into().map_err(|_| {
                 sqlite_loadable::Error::new_message("Could not convert given value to Julid")
@@ -143,7 +147,7 @@ pub mod sqlite_plugin {
     /// 0
     /// ```
     pub fn julid_counter(context: *mut sqlite3_context, id: &[*mut sqlite3_value]) -> Result<()> {
-        if let Some(value) = id.get(0) {
+        if let Some(value) = id.first() {
             let id = api::value_blob(value);
             let bytes: [u8; 16] = id.try_into().map_err(|_| {
                 sqlite_loadable::Error::new_message("Could not convert given value to Julid")
@@ -167,7 +171,7 @@ pub mod sqlite_plugin {
     /// 110787724287475712
     /// ```
     pub fn julid_sortable(context: *mut sqlite3_context, id: &[*mut sqlite3_value]) -> Result<()> {
-        if let Some(value) = id.get(0) {
+        if let Some(value) = id.first() {
             let id = api::value_blob(value);
             let bytes: [u8; 16] = id.try_into().map_err(|_| {
                 sqlite_loadable::Error::new_message("Could not convert given value to Julid")