Improved timer example

Also pushed other half of system::fs rename

examples/file-browser/main.orc

@@ -1,18 +1,18 @@
-import system::(io, directfs, async)
+import system::(io, fs, async)
 import std::(to_string, to_uint, inspect)
 
 const folder_view := \path. \next. do{
-  cps println $ "Contents of " ++ directfs::os_print path;
-  cps entries = async::block_on $ directfs::read_dir path;
+  cps println $ "Contents of " ++ fs::os_print path;
+  cps entries = async::block_on $ fs::read_dir path;
   cps list::enumerate entries
     |> list::map (pass \id. pass \name. \is_dir.
-      println $ to_string id ++ ": " ++ directfs::os_print name ++ if is_dir then "/" else ""
+      println $ to_string id ++ ": " ++ fs::os_print name ++ if is_dir then "/" else ""
     )
     |> list::chain;
   cps print "select an entry, or .. to move up: ";
   cps choice = readln;
   if (choice == "..") then do {
-    let parent_path = directfs::pop_path path
+    let parent_path = fs::pop_path path
       |> option::unwrap
       |> tuple::pick 0 2;
     next parent_path
@@ -20,10 +20,10 @@ const folder_view := \path. \next. do{
     cps subname, is_dir = to_uint choice
       |> (list::get entries)
       |> option::unwrap;
-    let subpath = directfs::join_paths path subname;
+    let subpath = fs::join_paths path subname;
     if is_dir then next subpath
     else do {
-      cps file = async::block_on $ directfs::read_file subpath;
+      cps file = async::block_on $ fs::read_file subpath;
       cps contents = async::block_on $ io::read_string file;
       cps println contents;
       next path
@@ -31,7 +31,7 @@ const folder_view := \path. \next. do{
   }
 }
 
-const main := loop_over (path = directfs::cwd) {
+const main := loop_over (path = fs::cwd) {
   cps path = folder_view path;
 }
 

examples/yes/main.orc

@@ -2,8 +2,9 @@ import system::async::(set_timer, yield)
 import system::io::(readln, println)
 import std::exit_status
 
-const main := (
-  set_timer true 1 (println "y" yield) \cancel.
-    readln \a.
-      cancel exit_status::success
-)
+const main := do{
+  cps cancel = set_timer true 1 (println "y" yield);
+  cps _ = readln;
+  cps cancel;
+  exit_status::success
+}