From 8ba1c4c844db276cc61a128b83afd80a6eda4095 Mon Sep 17 00:00:00 2001
From: "Jeffrey C. Ollie" <jeff@ocjtech.us>
Date: Fri, 22 May 2026 14:11:36 -0500
Subject: [PATCH] add format function

---
 src/main.zig | 2 +-
 src/uuid.zig | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main.zig b/src/main.zig
index eb212f0..aac2879 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -11,5 +11,5 @@ pub fn main(init: std.process.Init) void {
         },
     });
 
-    std.debug.print("{s}\n", .{uuid.serialize()});
+    std.debug.print("{f}\n", .{uuid});
 }
diff --git a/src/uuid.zig b/src/uuid.zig
index d44e652..97e820d 100644
--- a/src/uuid.zig
+++ b/src/uuid.zig
@@ -515,6 +515,13 @@ pub const UUID = packed union {
         if (!std.mem.eql(u8, "urn:uuid:", urn[0..9])) return error.MalformedUUID;
         return try deserialize(urn[9..]);
     }
+
+    pub fn format(self: UUID, writer: *std.Io.Writer) std.Io.Writer.Error!void {
+        try writer.print(
+            "{[a]x:0>8}-{[b]x:0>4}-{[c]x:0>4}-{[d]x:0>4}-{[e]x:0>12}",
+            self.serializable,
+        );
+    }
 };
 
 test "uuid test 1" {
-- 
2.51.2