use drain_filter instead of filter and retain

2021-09-25 11:33:53 +09:00
parent 353d6373ff
commit 4c23905515
2 changed files with 2 additions and 4 deletions
--- a/compiler/rustc_resolve/src/diagnostics.rs
+++ b/compiler/rustc_resolve/src/diagnostics.rs
@@ -1708,10 +1708,7 @@ crate fn show_candidates(

    path_strings.sort();
    let core_path_strings =
-        path_strings.iter().filter(|p| p.starts_with("core::")).cloned().collect::<Vec<String>>();
-    if !core_path_strings.is_empty() {
-        path_strings.retain(|p| !p.starts_with("core::"));
-    }
+        path_strings.drain_filter(|p| p.starts_with("core::")).collect::<Vec<String>>();
    path_strings.extend(core_path_strings);
    path_strings.dedup();