Use printn rather than println. Add string methods for copying.

resources/examples/contextfree/boolerr.c3

@@ -127,7 +127,7 @@ fn void main()
             Summary summary = readAndBuildSummary(url);
             io::printf("  Summary: ");
             summary.print(io::stdout());
-            io::println("");
+            io::printn("");
             String title_sure = summary.title ? summary.title.str() : "";
             io::printf("  Title: %s\n", title_sure);
             bool! has_title = readWhetherTitleNonEmpty(url);

resources/examples/contextfree/multi.c3

@@ -16,7 +16,7 @@ fn void main()
 
  		hello();
  	`;
-	io::println(text);
+	io::printn(text);
 
     // Binary
     const DATA = x"4749463839610100010080"

resources/examples/hello_world_many.c3

@@ -14,6 +14,6 @@ fn void main()
     };
     foreach (greeting : greetings)
     {
-        io::println(greeting);
+        io::printn(greeting);
     }
 }

resources/examples/notworking/madlibs.c3

@@ -3,7 +3,7 @@ import regex, stdio;
 
 fn void main()
 {
-    println("Enter a story template, terminated by an empty line:");
+    printn("Enter a story template, terminated by an empty line:");
     VarString story = "";
     while (1)
     {
@@ -25,5 +25,5 @@ fn void main()
         story = story.replace(s, word);
     }
 
-    println("\nThe story becomes:\n%s\n", story);
+    printn("\nThe story becomes:\n%s\n", story);
 }

resources/examples/plus_minus.c3

@@ -49,7 +49,7 @@ fn void main(String[] args)
 			case "-":
 				add = false;
 			default:
-				io::println("Failed to parse expression.");
+				io::printn("Failed to parse expression.");
 				return;
 		}
 	}

resources/rosettacode/antiprime.c3

@@ -16,7 +16,7 @@ fn int main()
 {
     int maxDiv;
     int count;
-    io::println("The first 20 anti-primes are:");
+    io::printn("The first 20 anti-primes are:");
     int n = 1;
     while (count < 20)
     {
@@ -29,6 +29,6 @@ fn int main()
         }
         n++;
     }
-    io::println("");
+    io::printn("");
     return 0;
 }

resources/rosettacode/helloworld.c3

@@ -2,6 +2,6 @@ import std::io;
 
 fn int main()
 {
-    io::println("Hello world");
+    io::printn("Hello world");
     return 0;
 }

resources/testfragments/allocators_testing.c3

@@ -23,7 +23,7 @@ fn void setstring(char* dst, String str)
 
 fn void testAllocator(Allocator* a, int val)
 {
-	io::println("Test");
+	io::printn("Test");
 	void* data = a.alloc_aligned(val, 128, 16)!!;
 	io::printf("Aligned with offset %p, align 16: %s offset align 128: %s\n", data, mem::ptr_is_aligned(data, 16), mem::ptr_is_aligned(data + 16, 128));
 	data = a.calloc_aligned(val, 128, 16)!!;
@@ -78,7 +78,7 @@ fn void main()
 	ArenaAllocator aa;
 	aa.init(&&char[1024] {});
 	testAllocator(&aa, 126);
-	io::println("Test dynamic arena");
+	io::printn("Test dynamic arena");
 	DynamicArenaAllocator dynamic_arena;
 	dynamic_arena.init(1024);
     testAllocator(&dynamic_arena, 112);