Added getOrPut & getOrPutHandle

src/gtl.zig

@@ -71,10 +71,10 @@ test "SlotMap" {
 
         for (materials.items) |material| {
             // --- REGISTER SHADER ---
-            const shader = shaders.getByKey(material.shader) orelse blk: {
+            const shader = try shaders.getOrPut(
-                const handle = try shaders.put(material.shader, .{ .raw = undefined });
+                material.shader,
-                break :blk shaders.get(handle).?;
+                .{ .raw = undefined },
-            };
+            );
             _ = shader;
 
             // --- DEBUG ---

src/keyed_slot_map.zig

@@ -100,6 +100,29 @@ pub fn KeyedSlotMap(
             return &entry.value;
         }
 
+        /// ----------------------------------------------------
+        /// ----------------------------------------------------
+        pub fn getOrPut(
+            self: *Self,
+            key: K,
+            value: V,
+        ) !*V {
+            if (self.getByKey(key)) |v| return v;
+            const handle = try self.put(key, value);
+            return self.get(handle).?;
+        }
+
+        /// ----------------------------------------------------
+        /// ----------------------------------------------------
+        pub fn getOrPutHandle(
+            self: *Self,
+            key: K,
+            value: V,
+        ) !*Handle(V) {
+            if (self.getHandle(key)) |h| return h;
+            return try self.put(key, value);
+        }
+
         /// ----------------------------------------------------
         /// ----------------------------------------------------
         pub fn getByKey(self: *Self, key: K) ?*V {