- Create optional with ~ instead of ?. return io::EOF?; becomes return io::EOF~.

- Deprecated use of `?` to create optional.

resources/examples/base64.c3

@@ -88,7 +88,7 @@ fn int? decode(String in, char* out, int* invalid_char_index = null)
 		if (c == ERR)
 		{
 			if (invalid_char_index) *invalid_char_index = i;
-			return INVALID_CHARACTER?;
+			return INVALID_CHARACTER~;
 		}
 
 

resources/examples/brainfk.c3

@@ -9,7 +9,7 @@ faultdef INTEPRET_FAILED;
 fn void? print_error_type_at(usz pos, String err)
 {
 	io::printfn("Error at %s: %s", pos, err);
-	return INTEPRET_FAILED?;
+	return INTEPRET_FAILED~;
 }
 
 fn void? brainf(String program)

resources/examples/contextfree/boolerr.c3

@@ -29,7 +29,7 @@ fn void? Summary.print(Summary* s, OutStream out)
 
 fn Doc? read_doc(String url)
 {
-	if (url.contains("fail")) return BAD_READ?;
+	if (url.contains("fail")) return BAD_READ~;
 	if (url.contains("head-missing")) return { };
 	if (url.contains("title-missing")) return { .head = maybe::value{Head}({}) };
 	if (url.contains("title-empty")) return { .head = maybe::value{Head}({ .title = maybe::value{String}("")}) };
@@ -52,7 +52,7 @@ fn Summary read_and_build_summary(String url)
 fn bool? is_title_non_empty(Doc doc)
 {
 	String? title = doc.head.get().title.get();
-	if (catch title) return TITLE_MISSING?;
+	if (catch title) return TITLE_MISSING~;
 	return title.len > 0;
 }
 

resources/examples/contextfree/cleanup.c3

@@ -36,7 +36,7 @@ fn Resource? prep_out(String out_name, String[] prep_names)
 		@open_with(name; Resource reader)
 		{
 	        io::printfn("use %s", reader.name);
-	        // if (true) return WELCOME_TO_YOUR_DOOM?;
+	        // if (true) return WELCOME_TO_YOUR_DOOM~;
 		}!;
 	}
 	return writer;

resources/examples/contextfree/guess_number.c3

@@ -18,8 +18,8 @@ int err_count = 0;
 fn int? ask_guess(int high)
 {
 	io::printf("Guess a number between 1 and %d: ", high);
-	String text = io::treadline() ?? FAILED_TO_READ?!;
-	return text.to_int() ?? NOT_AN_INT?;
+	String text = io::treadline() ?? FAILED_TO_READ~!;
+	return text.to_int() ?? NOT_AN_INT~;
 }
 
 fn int? ask_guess_multi(int high)

resources/examples/map.c3

@@ -35,17 +35,17 @@ fn void Map.init(Map *map, uint capacity = 128)
 
 fn Type? Map.valueForKey(Map *map, Key key)
 {
-    if (!map.map) return faults::KEY_NOT_FOUND?;
+    if (!map.map) return faults::KEY_NOT_FOUND~;
     uint hash = key.hash();
     usz pos = hash & map.mod;
     Entry* entry = &map.map[pos];
-    if (!entry) return faults::KEY_NOT_FOUND?;
+    if (!entry) return faults::KEY_NOT_FOUND~;
     while (entry)
     {
         if (entry.hash == hash && entry.key == key) return entry.value;
         entry = entry.next;
     }
-    return faults::KEY_NOT_FOUND?;
+    return faults::KEY_NOT_FOUND~;
 }
 
 fn Type? Map.set(Map *map, Key key, Type value) @maydiscard
@@ -67,7 +67,7 @@ fn Type? Map.set(Map *map, Key key, Type value) @maydiscard
             entry.value = value;
             entry.hash = hash;
             entry.key = key;
-            return faults::KEY_NOT_FOUND?;
+            return faults::KEY_NOT_FOUND~;
         }
         if (entry.hash == hash && entry.key == key)
         {
@@ -87,7 +87,7 @@ fn Type? Map.set(Map *map, Key key, Type value) @maydiscard
         new.next = null;
         new.used = true;
         entry.next = new;
-        return faults::KEY_NOT_FOUND?;
+        return faults::KEY_NOT_FOUND~;
     }
 }
 

resources/examples/plus_minus.c3

@@ -74,7 +74,7 @@ fn String? read_next(String* remaining)
 	}
 
 	// If it's a zero length token, return an optional result.
-	if (!len) return NO_MORE_TOKENS?;
+	if (!len) return NO_MORE_TOKENS~;
 
 	// Otherwise create a slice from the pointer start and length.
 	return (String)ptr_start[:len];

resources/examples/retry.c3

@@ -6,7 +6,7 @@ faultdef NOPE;
 fn int? eventually_succeed()
 {
 	static int i = 0;
-	if (i++ < 3) return NOPE?;
+	if (i++ < 3) return NOPE~;
 	return i * 3;
 }
 
@@ -24,7 +24,7 @@ macro @retry(#function, int retries = 3)
         }
         return result;
     } while (retries-- > 0);
-    return e?;
+    return e~;
 }
 
 fn void main()