1 files changed, 0 insertions, 50 deletions
diff --git a/exercises/087_async4.zig b/exercises/087_async4.zig
deleted file mode 100644
index 50829fc..0000000
--- a/exercises/087_async4.zig
+++ /dev/null
@@ -1,50 +0,0 @@
-//
-// When you have many tasks that don't return individual values,
-// use a Group! A Group is an unordered set of tasks that can
-// only be awaited or canceled as a whole:
-//
-//     var group: std.Io.Group = .init;
-//     group.async(io, myTask, .{arg1});
-//     group.async(io, myTask, .{arg2});
-//     try group.await(io);  // blocks until ALL tasks finish
-//
-// Important rules:
-//   * The return type of functions spawned in a group must be
-//     coercible to Cancelable!void (i.e. void, or error{Canceled}!void).
-//   * Once you call group.async(), you MUST eventually call
-//     group.await() or group.cancel() to release resources.
-//   * group.cancel() requests cancellation on ALL members,
-//     then waits for them to finish.
-//
-// Unlike Future, Group tasks don't return values to the caller.
-// They're ideal for parallel work that communicates through
-// shared state or side effects (like printing).
-//
-// Fix this program to await all tasks in the group.
-//
-const std = @import("std");
-const print = std.debug.print;
-
-pub fn main(init: std.process.Init) !void {
-    const io = init.io;
-
-    var group: std.Io.Group = .init;
-
-    // Spawn 3 tasks in any order. Each sleeps for (id * 1) seconds
-    // before printing, so the output order is deterministic.
-    group.async(io, doWork, .{ io, 1 });
-    group.async(io, doWork, .{ io, 3 });
-    group.async(io, doWork, .{ io, 2 });
-
-    // Wait for all tasks to finish.
-    // What Group method blocks until all tasks complete?
-    try group.???
-
-    print("All tasks finished!\n", .{});
-}
-
-fn doWork(io: std.Io, id: u32) void {
-    // Sleep ensures deterministic output order.
-    io.sleep(std.Io.Duration.fromSeconds(id), .awake) catch return;
-    print("Task {} done.\n", .{id});
-}