go: more generics

docs/2022-07-10-bootstrap-go.html

@@ -340,6 +340,13 @@ internal
       <pre><span class="pl-c">// Ptr takes in non-pointer and returns a pointer</span>
 <span class="pl-k">func</span> <span class="pl-s1">Ptr</span>[<span class="pl-s1">T</span> <span class="pl-en">any</span>](<span class="pl-s1">v</span> <span class="pl-smi">T</span>) <span class="pl-c1">*</span><span class="pl-smi">T</span> {
 	<span class="pl-k">return</span> <span class="pl-c1">&amp;</span><span class="pl-s1">v</span>
+}</pre>
+    </div>
+    <p>Return zero value:</p>
+    <div class="highlight highlight-source-go">
+      <pre><span class="pl-k">func</span> <span class="pl-en">Zero</span>[<span class="pl-s1">T</span> <span class="pl-s1">any</span>]() <span class="pl-smi">T</span> {
+  <span class="pl-k">var</span> <span class="pl-s1">zero</span> <span class="pl-smi">T</span>
+  <span class="pl-k">return</span> <span class="pl-s1">zero</span>
 }</pre>
     </div>
     <h2 id="user-content-external-libs">
@@ -883,6 +890,11 @@ fieldalignment -fix ./internal/business/<span class="pl-k">*</span>.go</pre>
           >Go generic: non-ptr to ptr</a
         >
       </li>
+      <li>
+        <a href="https://xeiaso.net/blog/gonads-2022-04-24" rel="nofollow"
+          >Crimes with Go Generics</a
+        >
+      </li>
     </ul>
 
     <div>

posts/2022-07-10-bootstrap-go.md

@@ -201,6 +201,15 @@ func Ptr[T any](v T) *T {
 }
 ```
 
+Return zero value:
+
+```go
+func Zero[T any]() T {
+  var zero T
+  return zero
+}
+```
+
 ## External libs
 
 ### No need `vendor`
@@ -498,3 +507,4 @@ go clean -cache -testcache -modcache -fuzzcache -x
 - [Making SQLite faster in Go](https://turriate.com/articles/making-sqlite-faster-in-go)
 - [Advanced Go Concurrency](https://encore.dev/blog/advanced-go-concurrency)
 - [Go generic: non-ptr to ptr](https://danielms.site/zet/2023/go-generic-non-ptr-to-ptr/)
+- [Crimes with Go Generics](https://xeiaso.net/blog/gonads-2022-04-24)