retry-loop question

[sivukhin]

Read article about retry loop and had a thought:

@matklad, what do you think about following retry loop structure (unfortunatelly, Zig ranges can't countdown in opposite direction - so need to use while loop instead of for (5..0)):

fn retry_loop() !void {
    var i: i32 = 5;
    while (i >= 0) : (i -= 1) {
        switch (try action()) {
            .ok => break,
            .retry => |err| if (i == 0) return err else sleep(),
        }
    }
}

Formally, it breaks 3rd property about obvious upper bound (as it doesn't use for (0..5) construction) - but actually upper bound is still pretty obvious.

But this approach a bit less redundant and a bit more clear - we are making N attempts, not N + 1.