Make std.string.removechars @safe and pure

dlang · Aug 25, 2013 · 3851d82 · 3851d82
1 parent 1d50b62
commit 3851d82
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/std/string.d b/std/string.d
@@ -2583,7 +2583,7 @@ unittest
  * Return string that is s with all characters removed that match pattern.
  */
 
-S removechars(S)(S s, in S pattern) if (isSomeString!S)
+S removechars(S)(S s, in S pattern) @safe pure if (isSomeString!S)
 {
     Unqual!(typeof(s[0]))[] r;
     bool changed = false;
@@ -2604,7 +2604,8 @@ S removechars(S)(S s, in S pattern) if (isSomeString!S)
             std.utf.encode(r, c);
         }
     }
-    return (changed ? cast(S) r : s);
+    auto trustedAssumeUnique(typeof(r) a)@trusted{ return assumeUnique(a); }
+    return (changed ? trustedAssumeUnique(r) : s);
 }
 
 unittest