diff options
| -rw-r--r-- | build.zig | 4 | ||||
| -rw-r--r-- | exercises/086_async3.zig | 29 | ||||
| -rw-r--r-- | patches/patches/086_async3.patch | 9 |
3 files changed, 42 insertions, 0 deletions
@@ -422,6 +422,10 @@ const exercises = [_]Exercise{ .main_file = "085_async2.zig", .output = "Hello async!", }, + .{ + .main_file = "086_async3.zig", + .output = "5 4 3 2 1", + }, }; /// Check the zig version to make sure it can compile the examples properly. diff --git a/exercises/086_async3.zig b/exercises/086_async3.zig new file mode 100644 index 0000000..ae5a9a6 --- /dev/null +++ b/exercises/086_async3.zig @@ -0,0 +1,29 @@ +// +// Because they can suspend and resume, async Zig functions are +// an example of a more general programming concept called +// "coroutines". One of the neat things about Zig async functions +// is that they retain their state as they are suspended and +// resumed. +// +// See if you can make this program print "5 4 3 2 1". +// +const print = @import("std").debug.print; + +pub fn main() void { + const n = 5; + var foo_frame = async foo(n); + + ??? + + print("\n", .{}); +} + +fn foo(countdown: u32) void { + var current = countdown; + + while (current > 0) { + print("{} ", .{current}); + current -= 1; + suspend; + } +} diff --git a/patches/patches/086_async3.patch b/patches/patches/086_async3.patch new file mode 100644 index 0000000..2e52b2b --- /dev/null +++ b/patches/patches/086_async3.patch @@ -0,0 +1,9 @@ +16c16,21 +< ??? +--- +> // Silly solution. You can also use a loop. +> resume foo_frame; +> resume foo_frame; +> resume foo_frame; +> resume foo_frame; +> resume foo_frame; |