fixed readme example

README.md

@@ -67,13 +67,13 @@ test "example" {
     std.debug.print("Heap align: {}\n\n", .{Arc.innerAlign()});
 
     var value = try Arc.init(std.testing.allocator, .{});
-    errdefer value.releaseWithFn(Data.deinit, .{});
+    errdefer if (value.releaseUnwrap()) |val| val.deinit();
 
     var handles: [THREADS]Thread = undefined;
     var i: usize = 0;
     while (i < THREADS) {
         const this_value = value.retain();
-        errdefer this_value.releaseWithFn(Data.deinit, .{});
+        errdefer if (this_value.releaseUnwrap()) |val| val.deinit();
         handles[i] = try Thread.spawn(.{}, thread_exec, .{this_value});
         i += 1;
     }
@@ -86,7 +86,7 @@ test "example" {
 }
 
 fn thread_exec(data: Arc) !void {
-    defer data.releaseWithFn(Data.deinit, .{});
+    defer if (data.releaseUnwrap()) |val| val.deinit();
 
     var rng = std.rand.DefaultPrng.init(@as(u64, @bitCast(@as(i64, @truncate(std.time.nanoTimestamp())))));
 

build.zig.zon

@@ -9,42 +9,6 @@
     // with this value.
     .minimum_zig_version = "0.12.0",
 
-    // This field is optional.
-    // Each dependency must either provide a `url` and `hash`, or a `path`.
-    // `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
-    // Once all dependencies are fetched, `zig build` no longer requires
-    // internet connectivity.
-    .dependencies = .{
-        // See `zig fetch --save <url>` for a command-line interface for adding dependencies.
-        //.example = .{
-        //    // When updating this field to a new URL, be sure to delete the corresponding
-        //    // `hash`, otherwise you are communicating that you expect to find the old hash at
-        //    // the new URL.
-        //    .url = "https://example.com/foo.tar.gz",
-        //
-        //    // This is computed from the file contents of the directory of files that is
-        //    // obtained after fetching `url` and applying the inclusion rules given by
-        //    // `paths`.
-        //    //
-        //    // This field is the source of truth; packages do not come from a `url`; they
-        //    // come from a `hash`. `url` is just one of many possible mirrors for how to
-        //    // obtain a package matching this `hash`.
-        //    //
-        //    // Uses the [multihash](https://multiformats.io/multihash/) format.
-        //    .hash = "...",
-        //
-        //    // When this is provided, the package is found in a directory relative to the
-        //    // build root. In this case the package's hash is irrelevant and therefore not
-        //    // computed. This field and `url` are mutually exclusive.
-        //    .path = "foo",
-
-        //    // When this is set to `true`, a package is declared to be lazily
-        //    // fetched. This makes the dependency only get fetched if it is
-        //    // actually used.
-        //    .lazy = false,
-        //},
-    },
-
     // Specifies the set of files and directories that are included in this package.
     // Only files and directories listed here are included in the `hash` that
     // is computed for this package.