Support divergent list building

2 files changed, 28 insertions, 1 deletions

diff --git a/examples/44-list-builder/shed-examples.json5 b/examples/44-list-builder/shed-examples.json5
index e6cc5e44..e14ac1b1 100644
--- a/examples/44-list-builder/shed-examples.json5
+++ b/examples/44-list-builder/shed-examples.json5
@@ -19,7 +19,11 @@ hellohello world\n\
 \n\
 buildListThenPrefix()\n\
 hello world\n\
-hello",
+hello\
+\n\
+buildDivergentLists()\n\
+hello world\n\
+hello universe\n",
     },
   ],
 }
diff --git a/examples/44-list-builder/src/Lists.shed b/examples/44-list-builder/src/Lists.shed
index c6d01df5..389371d1 100644
--- a/examples/44-list-builder/src/Lists.shed
+++ b/examples/44-list-builder/src/Lists.shed
@@ -6,6 +6,7 @@ pub fun main() ! Io -> Unit {
     buildListThenExtend!();
     extendThenBuildPrefixAndList!();
     buildListThenPrefix!();
+    buildDivergentLists!();
 }
 
 fun buildList() ! Io -> Unit {
@@ -107,3 +108,25 @@ fun buildListThenPrefix() ! Io -> Unit {
 
     print!("\n");
 }
+
+fun buildDivergentLists() ! Io -> Unit {
+    print!("buildDivergentLists()\n");
+
+    var builder1 = Lists.listBuilder[String]();
+    assign builder1 = builder1.add("hello");
+    val builder2 = builder1.add(" world\n");
+    val builder3 = builder1.add(" universe\n");
+
+    val list1 = builder2.build();
+    val list2 = builder3.build();
+
+    list1.forEach!(fn (element) ! Io {
+        print!(element);
+    });
+
+    list2.forEach!(fn (element) ! Io {
+        print!(element);
+    });
+
+    print!("\n");
+}