zig

commit fb3afc8d3da547c1b73c9cf18cd1a394b0ebefbc (tree)
parent bfda12efcf2f6b4bc6803f520108b7ce05636965
Author: marko <marko03kostic@protonmail.com>
Date:   Thu, 11 Sep 2025 00:14:01 +0200

use pointer subtraction

Diffstat:
M
lib/std/hash_map.zig
 | 
3
+--

1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/lib/std/hash_map.zig b/lib/std/hash_map.zig
@@ -1267,12 +1267,11 @@ pub fn HashMapUnmanaged(
         /// TODO: answer the question in these doc comments, does this
         /// increase the unused capacity by one?
         pub fn removeByPtr(self: *Self, key_ptr: *K) void {
-            // TODO: replace with pointer subtraction once supported by zig
             // if @sizeOf(K) == 0 then there is at most one item in the hash
             // map, which is assumed to exist as key_ptr must be valid.  This
             // item must be at index 0.
             const idx = if (@sizeOf(K) > 0)
-                (@intFromPtr(key_ptr) - @intFromPtr(self.keys())) / @sizeOf(K)
+                (key_ptr - self.keys())
             else
                 0;