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author | Dave Gauer <dave@ratfactor.com> | 2021-05-12 21:25:48 -0400 |
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committer | Dave Gauer <dave@ratfactor.com> | 2021-05-12 21:25:48 -0400 |
commit | 3e5647d88cde9834dea4a71088cf63413f859f4e (patch) | |
tree | 9c313b7d437ae72eccdbc504b25d287ef5af8a3d /exercises | |
parent | 54c048b0a0ea5ee2136c4d4193660d4934eab925 (diff) |
add ex086 async 3
Diffstat (limited to 'exercises')
-rw-r--r-- | exercises/086_async3.zig | 29 |
1 files changed, 29 insertions, 0 deletions
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; + } +} |