33 lines
725 B
Zig
33 lines
725 B
Zig
//
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// Because they can suspend and resume, async Zig functions are
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// an example of a more general programming concept called
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// "coroutines". One of the neat things about Zig async functions
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// is that they retain their state as they are suspended and
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// resumed.
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//
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// See if you can make this program print "5 4 3 2 1".
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//
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const print = @import("std").debug.print;
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pub fn main() void {
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const n = 5;
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var foo_frame = async foo(n);
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resume foo_frame;
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resume foo_frame;
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resume foo_frame;
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resume foo_frame;
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print("\n", .{});
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}
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fn foo(countdown: u32) void {
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var current = countdown;
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while (current > 0) {
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print("{} ", .{current});
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current -= 1;
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suspend {}
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}
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}
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