Improve String handling

See https://blog.sulami.xyz/posts/string-vs-str/

1 files changed, 7 insertions, 7 deletions

diff --git a/src/mail.rs b/src/mail.rs
index b6db0cd..7017654 100644
--- a/src/mail.rs
+++ b/src/mail.rs
@@ -18,8 +18,8 @@ pub struct Recipient {
 pub async fn send(
     config: &Config,
     recipients: Vec<Recipient>,
-    subject: String,
-    message: String,
+    subject: &str,
+    message: &str,
 ) -> bool {
     let headers = format_headers(recipients.clone(), subject);
 
@@ -72,24 +72,24 @@ pub async fn send(
     }
 }
 
-fn format_headers(recipients: Vec<Recipient>, subject: String) -> String {
+fn format_headers(recipients: Vec<Recipient>, subject: &str) -> String {
     let recipients = recipients
         .into_iter()
-        .map(|r| format_address(r.name, r.address))
+        .map(|r| format_address(&r.name, &r.address))
         .collect::<Vec<String>>()
         .join(", ");
 
     format!(
         "Date: {}\nFrom: {}\nTo: {}\nSubject: {}",
         Utc::now().to_rfc2822(),
-        format_address(FROM_NAME.to_string(), FROM_ADDRESS.to_string()),
+        format_address(FROM_NAME, FROM_ADDRESS),
         recipients,
         subject,
     )
 }
 
-fn format_address(name: String, address: String) -> String {
-    format!("{} <{}>", name, address)
+fn format_address(name: &str, address: &str) -> String {
+    format!("{name} <{address}>")
 }
 
 async fn spawn(mut command: Command, stdin: &[u8]) -> Result<Output, Error> {