Optimize reading from util.Bytes, iterables and strings in Blob class

Author: thekid

ChangeLog.md

@@ -3,6 +3,8 @@ XP Framework Core ChangeLog
 
 ## ?.?.? / ????-??-??
 
+## 12.10.0 / 2026-04-23
+
 ### Bugfixes
 
 * Fixed `io.streams.StreamTransfer::transferAll()` not correctly returning
@@ -11,6 +13,8 @@ XP Framework Core ChangeLog
 
 ### Features
 
+* Optimized reading from util.Bytes, iterables and strings in `io.Blob` class
+  (@thekid)
 * Merged PR #362: Add a seekable input stream which spools to a temporary
   file: `io.streams.SpooledInputStream`
   (@thekid)

src/main/php/io/Blob.class.php

@@ -31,13 +31,13 @@ public function __construct($parts= [], array $meta= []) {
         })();
       };
     } else if ($parts instanceof Bytes || is_string($parts)) {
-      $this->iterator= fn() => (function() { yield (string)$this->parts; })();
+      $this->iterator= function() { yield (string)$this->parts; };
     } else if (is_iterable($parts)) {
-      $this->iterator= fn() => (function() {
+      $this->iterator= function() {
         foreach ($this->parts as $part) {
           yield (string)$part;
         }
-      })();
+      };
     } else {
       throw new IllegalArgumentException(sprintf(
         'Expected iterable|string|util.Bytes|io.streams.InputStream, have %s',