d962ad5ea0
Both ways do the same thing but I think the compiler might have an easier time optimizing `appendNTimes` because it does less things/the path is shorter. I have not done any benchmarking at runtime but have compared the instruction count of both ways a little here: https://zig.godbolt.org/z/vr193W9oj `b` (`appendNTimes`) is ~103 instructions while `a` (`writer().writeByteNTimes`) is ~117 instructions. And looking at the implementation of `writeByteNTimes`, it only seems to buffer up 256 bytes before doing another `writeAll` which for `std.ArrayList` probably means another allocation, whereas when directly using `appendNTimes`, the entire exact additional capacity required is known from the start. Either way, this would be more consistent anyway.
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