BufWriterAsync和BufWriter在Deno/TypeScript中不写任何东西到控制台

Question

问题是，当尝试运行BUFFER时。writeSync在任何类型的循环中，由于某种原因，它只是不向缓冲区写入任何内容，在for循环之外，它正常写入。

控制台中预期的列表文本没有得到任何内容。代码:

import { BufWriterSync } from "https://deno.land/std@0.182.0/io/buf_writer.ts";
const BUFFER = BufWriterSync.create(Deno.stdout);
const TEXT_ENCODER = new TextEncoder();
function main() {
const range = new Uint32Array().fill(1, 0, 1000);
//BUFFER.reset(Deno.stdout);
range.forEach(number => {
BUFFER.writeSync(TEXT_ENCODER.encode(number.toString()))
if (!isEven(number)) {
BUFFER.writeSync(TEXT_ENCODER.encode(`${number} is odd`));
} else {
BUFFER.writeSync(TEXT_ENCODER.encode(`${number} is even`));
}
})
console.log(BUFFER.buffered());
}
Deno.bench("benchmark", function () {
main();
});
function isEven(num: number): boolean {
return num % 2 == 0;
}
if (import.meta.main) {
main();
}

Answer 1

由于range数组为空，因此没有看到预期的对控制台的写入。

我建议传递一个length值(例如2000)到你的new Uint32Array()构造函数调用:

const range = new Uint32Array(2000).fill(1, 0, 1000);

示例输出:

11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is 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odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is 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odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd11 is odd00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is even00 is 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