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-rw-r--r--patches/patches/084_interfaces.patch11
-rw-r--r--patches/patches/085_async.patch11
-rw-r--r--patches/patches/086_async2.patch14
-rw-r--r--patches/patches/087_async3.patch18
-rw-r--r--patches/patches/088_async4.patch11
-rw-r--r--patches/patches/089_async5.patch11
-rw-r--r--patches/patches/090_async6.patch11
-rw-r--r--patches/patches/091_async7.patch13
-rw-r--r--patches/patches/092_async8.patch11
-rw-r--r--patches/patches/093_async9.patch11
-rw-r--r--patches/patches/094_async10.patch13
-rw-r--r--patches/patches/095_quiz_async.patch52
12 files changed, 187 insertions, 0 deletions
diff --git a/patches/patches/084_interfaces.patch b/patches/patches/084_interfaces.patch
new file mode 100644
index 0000000..a1d0628
--- /dev/null
+++ b/patches/patches/084_interfaces.patch
@@ -0,0 +1,11 @@
+--- exercises/084_interfaces.zig 2025-08-15 15:17:57.839348063 +0200
++++ answers/084_interfaces.zig 2026-04-03 14:27:32.670756488 +0200
+@@ -106,7 +106,7 @@
+ for (my_insects) |insect| {
+ // Almost done! We want to print() each insect with a
+ // single method call here.
+- ???
++ insect.print();
+ }
+ }
+
diff --git a/patches/patches/085_async.patch b/patches/patches/085_async.patch
new file mode 100644
index 0000000..ca8b102
--- /dev/null
+++ b/patches/patches/085_async.patch
@@ -0,0 +1,11 @@
+--- exercises/085_async.zig 2026-04-01 20:40:08.904999609 +0200
++++ answers/085_async.zig 2026-04-01 20:40:05.641933231 +0200
+@@ -37,7 +37,7 @@
+ const std = @import("std");
+
+ pub fn main(init: std.process.Init) !void {
+- const io = init.???;
++ const io = init.io;
+
+ // Get the current wall-clock time using the Io interface.
+ // Hint: Timestamp.now() takes an Io and a Clock type (.real = wall clock).
diff --git a/patches/patches/086_async2.patch b/patches/patches/086_async2.patch
new file mode 100644
index 0000000..7506a69
--- /dev/null
+++ b/patches/patches/086_async2.patch
@@ -0,0 +1,14 @@
+--- exercises/086_async2.zig 2026-04-01 19:22:50.017227542 +0200
++++ answers/086_async2.zig 2026-04-01 19:21:57.569158481 +0200
+@@ -38,9 +38,9 @@
+
+ // Now collect the result. What method on Future gives us
+ // the value, blocking if it isn't ready yet?
+- const answer = future.???(io);
++ const answer = future.await(io);
+
+- std.debug.print("The answer is: {}\n", .{answer});
++ std.debug.print("the answer is: {}\n", .{answer});
+ }
+
+ fn computeAnswer(a: u32, b: u32) u32 {
diff --git a/patches/patches/087_async3.patch b/patches/patches/087_async3.patch
new file mode 100644
index 0000000..8365e7a
--- /dev/null
+++ b/patches/patches/087_async3.patch
@@ -0,0 +1,18 @@
+--- exercises/087_async3.zig 2026-04-01 22:51:05.540094851 +0200
++++ answers/087_async3.zig 2026-04-01 22:50:44.579669189 +0200
+@@ -29,12 +29,12 @@
+ const io = init.io;
+
+ // Launch both tasks asynchronously.
+- var future_a = io.async(slowAdd, .{ 10, 20 });
+- var future_b = ???(slowMul, .{ 6, 7 });
++ var future_a = io.async(slowAdd, .{ 1, 2 });
++ var future_b = io.async(slowMul, .{ 6, 7 });
+
+ // Await both results.
+ const sum = future_a.await(io);
+- const product = future_b.???(io);
++ const product = future_b.await(io);
+
+ print("{} + {} = {}\n", .{ 1, 2, sum });
+ print("{} * {} = {}\n", .{ 6, 7, product });
diff --git a/patches/patches/088_async4.patch b/patches/patches/088_async4.patch
new file mode 100644
index 0000000..1faf30e
--- /dev/null
+++ b/patches/patches/088_async4.patch
@@ -0,0 +1,11 @@
+--- exercises/088_async4.zig 2026-04-01 23:17:31.066443941 +0200
++++ answers/088_async4.zig 2026-04-01 23:17:39.251612131 +0200
+@@ -38,7 +38,7 @@
+
+ // Wait for all tasks to finish.
+ // What Group method blocks until all tasks complete?
+- try group.???
++ try group.await(io);
+
+ print("All tasks finished!\n", .{});
+ }
diff --git a/patches/patches/089_async5.patch b/patches/patches/089_async5.patch
new file mode 100644
index 0000000..d2baa96
--- /dev/null
+++ b/patches/patches/089_async5.patch
@@ -0,0 +1,11 @@
+--- exercises/089_async5.zig 2026-04-01 23:40:40.505855238 +0200
++++ answers/089_async5.zig 2026-04-01 23:40:10.176236971 +0200
+@@ -40,7 +40,7 @@
+
+ // We don't want to wait 10 seconds!
+ // Which Future method requests cancellation AND returns the result?
+- const result = ???;
++ const result = future.cancel(io);
+
+ print("Task returned: {}\n", .{result});
+ }
diff --git a/patches/patches/090_async6.patch b/patches/patches/090_async6.patch
new file mode 100644
index 0000000..5ac777b
--- /dev/null
+++ b/patches/patches/090_async6.patch
@@ -0,0 +1,11 @@
+--- exercises/090_async6.zig 2026-04-02 10:25:34.016616118 +0200
++++ answers/090_async6.zig 2026-04-02 10:27:48.827144051 +0200
+@@ -47,7 +47,7 @@
+
+ // Wait for the first finisher.
+ // What Select method returns the first completed result?
+- const winner = ???;
++ const winner = try sel.await();
+
+ switch (winner) {
+ .hare => |msg| print("Hare: {s}\n", .{msg}),
diff --git a/patches/patches/091_async7.patch b/patches/patches/091_async7.patch
new file mode 100644
index 0000000..b4bab9b
--- /dev/null
+++ b/patches/patches/091_async7.patch
@@ -0,0 +1,13 @@
+--- exercises/091_async7.zig 2026-04-02 10:50:08.142508099 +0200
++++ answers/091_async7.zig 2026-04-02 10:49:59.629341593 +0200
+@@ -49,8 +49,8 @@
+ for (0..times) |_| {
+ // Acquire the lock before modifying shared state.
+ // What Mutex method blocks until the lock is acquired?
+- state.mutex.??? catch return;
+- defer state.mutex.unlock(); // <-- what's missing here?
++ state.mutex.lock(io) catch return;
++ defer state.mutex.unlock(io);
+
+ state.counter += 1;
+ }
diff --git a/patches/patches/092_async8.patch b/patches/patches/092_async8.patch
new file mode 100644
index 0000000..0ec9116
--- /dev/null
+++ b/patches/patches/092_async8.patch
@@ -0,0 +1,11 @@
+--- exercises/092_async8.zig 2026-04-02 10:49:27.925721496 +0200
++++ answers/092_async8.zig 2026-04-02 10:49:31.694795212 +0200
+@@ -43,7 +43,7 @@
+ // Send numbers 1 through 10 into the queue.
+ for (1..11) |i| {
+ // What Queue method sends a single element, blocking if full?
+- queue.???(io, @intCast(i)) catch return;
++ queue.putOne(io, @intCast(i)) catch return;
+ }
+ // Signal that we're done sending.
+ queue.close(io);
diff --git a/patches/patches/093_async9.patch b/patches/patches/093_async9.patch
new file mode 100644
index 0000000..f759921
--- /dev/null
+++ b/patches/patches/093_async9.patch
@@ -0,0 +1,11 @@
+--- exercises/093_async9.zig 2026-04-03 13:44:50.526780809 +0200
++++ answers/093_async9.zig 2026-04-03 13:44:54.957870294 +0200
+@@ -36,7 +36,7 @@
+ // Launch with a guaranteed separate thread.
+ // Which Io method guarantees true concurrency?
+ // (Hint: unlike io.async, this one can fail!)
+- var future = try io.???(compute, .{io});
++ var future = try io.concurrent(compute, .{io});
+
+ print("Main thread continues...\n", .{});
+
diff --git a/patches/patches/094_async10.patch b/patches/patches/094_async10.patch
new file mode 100644
index 0000000..ae0d26d
--- /dev/null
+++ b/patches/patches/094_async10.patch
@@ -0,0 +1,13 @@
+--- exercises/094_async10.zig 2026-04-03 14:25:16.600025924 +0200
++++ answers/094_async10.zig 2026-04-03 14:24:56.192615893 +0200
+@@ -50,8 +50,8 @@
+
+ // Protect this section from cancellation.
+ // What method swaps the cancel protection state?
+- const old = io.???(. blocked);
+- defer _ = io.???(old);
++ const old = io.swapCancelProtection(.blocked);
++ defer _ = io.swapCancelProtection(old);
+
+ // This sleep will NOT return error.Canceled even though
+ // we get canceled during it — protection is active!
diff --git a/patches/patches/095_quiz_async.patch b/patches/patches/095_quiz_async.patch
new file mode 100644
index 0000000..dbaae07
--- /dev/null
+++ b/patches/patches/095_quiz_async.patch
@@ -0,0 +1,52 @@
+--- exercises/095_quiz_async.zig 2026-04-03 18:04:53.577391455 +0200
++++ answers/095_quiz_async.zig 2026-04-03 18:05:42.570392172 +0200
+@@ -51,7 +51,7 @@
+ // Bug 1: The collector needs to lock before modifying
+ // shared state. What Mutex method acquires the lock?
+ self.mutex.lock(io) catch return;
+- self.mutex.???(io) catch return;
++ defer self.mutex.unlock(io);
+
+ switch (reading.sensor_type) {
+ .thermometer => self.temperature = reading.value,
+@@ -79,9 +79,9 @@
+ // Bug 2: io.async doesn't guarantee a separate thread.
+ // Which Io method guarantees true concurrency?
+ // (Don't forget: it can fail, so you need 'try'!)
+- try sensors.???(io, sensor, .{ io, &queue, .thermometer, 20 });
+- try sensors.???(io, sensor, .{ io, &queue, .hygrometer, 60 });
+- try sensors.???(io, sensor, .{ io, &queue, .anemometer, 10 });
++ try sensors.concurrent(io, sensor, .{ io, &queue, .thermometer, 20 });
++ try sensors.concurrent(io, sensor, .{ io, &queue, .hygrometer, 60 });
++ try sensors.concurrent(io, sensor, .{ io, &queue, .anemometer, 10 });
+
+ // Collector group: processes readings from the queue.
+ var collectors: std.Io.Group = .init;
+@@ -90,7 +90,6 @@
+ // Bug 3: Wait for ALL sensors to finish sending their readings.
+ // What Group method blocks until all tasks complete?
+ try sensors.await(io);
+- // try sensors.???(io);
+
+ // All sensors done — close the queue so the collector knows
+ // there's no more data coming.
+@@ -104,8 +103,8 @@
+ //
+ // Bug 4: Protect this section from cancellation.
+ // What Io method swaps the cancel protection state?
+- const old_protection = io.???(.blocked);
+- defer _ = io.???(old_protection);
++ const old_protection = io.swapCancelProtection(.blocked);
++ defer _ = io.swapCancelProtection(old_protection);
+
+ printGardenReport(&weather);
+ }
+@@ -127,7 +126,7 @@
+
+ // Bug 5: Send the reading into the queue.
+ // What Queue method sends a single element?
+- queue.???(io, reading) catch return;
++ queue.putOne(io, reading) catch return;
+ }
+ }
+