7 files changed, 9 insertions, 9 deletions
diff --git a/examples/commands/commands.tm b/examples/commands/commands.tm
index ddd04d7b..170e45bc 100644
--- a/examples/commands/commands.tm
+++ b/examples/commands/commands.tm
@@ -11,12 +11,12 @@ enum ExitType(Exited(status:Int32), Signaled(signal:Int32), Failed):
         when e is Exited(status): return (status == 0)
         else: return no
 
-    func or_fail(e:ExitType, message=none:Text):
+    func or_fail(e:ExitType, message:Text?=none):
         if not e:succeeded():
             fail(message or "Program failed: $e")
 
 struct ProgramResult(stdout:[Byte], stderr:[Byte], exit_type:ExitType):
-    func or_fail(r:ProgramResult, message=none:Text -> ProgramResult):
+    func or_fail(r:ProgramResult, message:Text?=none -> ProgramResult):
         when r.exit_type is Exited(status):
             if status == 0:
                 return r
diff --git a/examples/http-server/connection-queue.tm b/examples/http-server/connection-queue.tm
index 362dab7b..84f92362 100644
--- a/examples/http-server/connection-queue.tm
+++ b/examples/http-server/connection-queue.tm
@@ -12,7 +12,7 @@ struct ConnectionQueue(_connections:@[Int32]=@[], _mutex=pthread_mutex_t.new(),
 
 
     func dequeue(queue:ConnectionQueue -> Int32):
-        conn := none:Int32
+        conn : Int32? = none
 
         queue._mutex:lock()
 
diff --git a/examples/http/http.tm b/examples/http/http.tm
index ee1b8c75..ce74d010 100644
--- a/examples/http/http.tm
+++ b/examples/http/http.tm
@@ -93,7 +93,7 @@ func put(url:Text, data="", headers=["Content-Type: application/json", "Accept:
 func patch(url:Text, data="", headers=["Content-Type: application/json", "Accept: application/json"] -> HTTPResponse):
     return _send(PATCH, url, data, headers)
 
-func delete(url:Text, data=none:Text, headers=["Content-Type: application/json", "Accept: application/json"] -> HTTPResponse):
+func delete(url:Text, data:Text?=none, headers=["Content-Type: application/json", "Accept: application/json"] -> HTTPResponse):
     return _send(DELETE, url, data, headers)
 
 func main():
diff --git a/examples/patterns/README.md b/examples/patterns/README.md
index 2fb17391..9e9d8601 100644
--- a/examples/patterns/README.md
+++ b/examples/patterns/README.md
@@ -332,7 +332,7 @@ not match the pattern.
 >> "123 boxes":pattern_captures($Pat"{int} {id}")
 = ["123", "boxes"]?
 >> "xxx":pattern_captures($Pat"{int} {id}")
-= none:[Text]
+= none
 ```
 
 ---
diff --git a/examples/random/random.tm b/examples/random/random.tm
index 0a0167ac..95d2f9fe 100644
--- a/examples/random/random.tm
+++ b/examples/random/random.tm
@@ -25,7 +25,7 @@ func _os_random_bytes(count:Int64 -> [Byte]):
     }
 
 struct RandomNumberGenerator(_chacha:chacha_ctx, _random_bytes:[Byte]=[]; secret):
-    func new(seed=none:[Byte], -> @RandomNumberGenerator):
+    func new(seed:[Byte]?=none, -> @RandomNumberGenerator):
         ctx := chacha_ctx.from_seed(seed or _os_random_bytes(40))
         return @RandomNumberGenerator(ctx, [])
 
diff --git a/examples/tomo-install/tomo-install.tm b/examples/tomo-install/tomo-install.tm
index c705af12..0be05619 100644
--- a/examples/tomo-install/tomo-install.tm
+++ b/examples/tomo-install/tomo-install.tm
@@ -40,7 +40,7 @@ func main(paths:[Path]):
             say("Already installed: $url")
             skip
 
-        alias := none:Text
+        alias : Text? = none
         curl_flags := ["-L"]
         if github := url_without_protocol:pattern_captures($Pat"github.com/{!/}/{!/}#{..}"):
             user := github[1]
diff --git a/examples/vectors/vectors.tm b/examples/vectors/vectors.tm
index 3f07e500..f978d3d1 100644
--- a/examples/vectors/vectors.tm
+++ b/examples/vectors/vectors.tm
@@ -19,7 +19,7 @@ struct Vec2(x,y:Num):
     func divided_by(v:Vec2, divisor:Num->Vec2; inline):
         return Vec2(v.x/divisor, v.y/divisor)
     func length(v:Vec2->Num; inline):
-        return (v.x*v.x + v.y*v.y)!:sqrt()
+        return (v.x*v.x + v.y*v.y):sqrt()
     func dist(a,b:Vec2->Num; inline):
         return a:minus(b):length()
     func angle(v:Vec2->Num; inline):
@@ -58,7 +58,7 @@ struct Vec3(x,y,z:Num):
     func divided_by(v:Vec3, divisor:Num->Vec3; inline):
         return Vec3(v.x/divisor, v.y/divisor, v.z/divisor)
     func length(v:Vec3->Num; inline):
-        return (v.x*v.x + v.y*v.y + v.z*v.z)!:sqrt()
+        return (v.x*v.x + v.y*v.y + v.z*v.z):sqrt()
     func dist(a,b:Vec3->Num; inline):
         return a:minus(b):length()
     func norm(v:Vec3->Vec3; inline):