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Make writeByteNTimes faster and leaner

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This commit is contained in:
LemonBoy 2020-01-21 20:58:02 +01:00
parent bc82e0f3d3
commit 59d0dda080
1 changed files with 8 additions and 4 deletions
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12
lib/std/io/out_stream.zig
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@ -45,10 +45,14 @@ pub fn OutStream(comptime WriteError: type) type {
}
pub fn writeByteNTimes(self: *Self, byte: u8, n: usize) Error!void {
const slice = @as(*const [1]u8, &byte)[0..];
var i: usize = 0;
while (i < n) : (i += 1) {
try self.writeFn(self, slice);
var bytes: [256]u8 = undefined;
mem.set(u8, bytes[0..], byte);
var remaining: usize = n;
while (remaining > 0) {
const to_write = std.math.min(remaining, bytes.len);
try self.writeFn(self, bytes[0..to_write]);
remaining -= to_write;
}
}