filehandle.writev(buffers[, position])

• buffers <Buffer[]> | <TypedArray[]> | <DataView[]>

• position <integer> | <null> 要写入来自 buffers 的数据的文件的开头偏移量。如果 position 不是 number，则数据将被写入当前位置。默认值：null

  ¥position <integer> | <null> The offset from the beginning of the file where the data from buffers should be written. If position is not a number, the data will be written at the current position. Default: null

• 返回：<Promise>

  ¥Returns: <Promise>

将 <ArrayBufferView> 的数组写入文件。

¥Write an array of <ArrayBufferView> to the file.

这个 promise 是通过一个包含两个属性的对象来实现的：

¥The promise is fulfilled with an object containing a two properties:

• bytesWritten <integer> 写入的字节数

  ¥bytesWritten <integer> the number of bytes written

• buffers <Buffer[]> | <TypedArray[]> | <DataView[]> 对 buffers 输入的引用。

  ¥buffers <Buffer[]> | <TypedArray[]> | <DataView[]> a reference to the buffers input.

在不等待 promise 履行（或拒绝）的情况下对同一个文件多次调用 writev() 是不安全的。

¥It is unsafe to call writev() multiple times on the same file without waiting for the promise to be fulfilled (or rejected).

在 Linux 上，以追加模式打开文件时，位置写入不起作用。内核会忽略位置参数，并始终将数据追加到文件末尾。

¥On Linux, positional writes don't work when the file is opened in append mode. The kernel ignores the position argument and always appends the data to the end of the file.