replace std::iter::once(_) with [_]

much more concise

Author: ada4a

src/gh_range_diff.rs

@@ -579,11 +579,7 @@ impl UnifiedDiffPrinter for HtmlDiffPrinter<'_> {
             if let Some(&last) = before.last() {
                 for &token in before {
                     let token = self.0[token];
-                    self.handle_hunk_line(
-                        &mut f,
-                        HunkTokenStatus::Removed,
-                        std::iter::once((token, false)),
-                    )?;
+                    self.handle_hunk_line(&mut f, HunkTokenStatus::Removed, [(token, false)])?;
                 }
                 if !self.0[last].ends_with('\n') {
                     writeln!(f)?;
@@ -593,11 +589,7 @@ impl UnifiedDiffPrinter for HtmlDiffPrinter<'_> {
             if let Some(&last) = after.last() {
                 for &token in after {
                     let token = self.0[token];
-                    self.handle_hunk_line(
-                        &mut f,
-                        HunkTokenStatus::Added,
-                        std::iter::once((token, false)),
-                    )?;
+                    self.handle_hunk_line(&mut f, HunkTokenStatus::Added, [(token, false)])?;
                 }
                 if !self.0[last].ends_with('\n') {
                     writeln!(f)?;

src/github.rs

@@ -1503,16 +1503,11 @@ impl Repository {
         let filters = filters
             .iter()
             .map(|(key, val)| format!("{key}={val}"))
-            .chain(std::iter::once(format!(
-                "labels={}",
-                include_labels.join(",")
-            )))
-            .chain(std::iter::once("filter=all".to_owned()))
-            .chain(std::iter::once(format!("sort={}", ordering.sort,)))
-            .chain(std::iter::once(
-                format!("direction={}", ordering.direction,),
-            ))
-            .chain(std::iter::once(format!("per_page={}", ordering.per_page,)))
+            .chain([format!("labels={}", include_labels.join(","))])
+            .chain(["filter=all".to_owned()])
+            .chain([format!("sort={}", ordering.sort)])
+            .chain([format!("direction={}", ordering.direction)])
+            .chain([format!("per_page={}", ordering.per_page)])
             .collect::<Vec<_>>()
             .join("&");
         format!(
@@ -1535,7 +1530,7 @@ impl Repository {
             .map(|(key, val)| format!("{key}:{val}"))
             .chain(include_labels.iter().map(|label| format!("label:{label}")))
             .chain(exclude_labels.iter().map(|label| format!("-label:{label}")))
-            .chain(std::iter::once(format!("repo:{}", self.full_name)))
+            .chain([format!("repo:{}", self.full_name)])
             .collect::<Vec<_>>()
             .join("+");
         format!(