Family Day update

Task/String-concatenation/Pike/string-concatenation.pike

@@ -0,0 +1,4 @@
+string hello = "hello ";
+write(hello + "world" + "\n");
+string all_of_it = hello + "world";
+write(all_of_it + "\n");

Task/String-concatenation/Retro/string-concatenation.retro

@@ -1,2 +1 @@
-with strings'
-"hello" "literal" append puts
+'hello_  'literal s:append s:put

Task/String-concatenation/Vala/string-concatenation.vala

@@ -0,0 +1,7 @@
+void main() {
+  var s = "hello";
+  print(s);
+  print(" literal\n");
+  var s2 = s + " literal\n";
+  print(s2);
+}