Function writev

  • Write an array of ArrayBufferViews to the file specified by fd usingwritev().

    position is the offset from the beginning of the file where this data should be written. If typeof position !== 'number', the data will be written at the current position.

    The callback will be given three arguments: err, bytesWritten, andbuffers. bytesWritten is how many bytes were written from buffers.

    If this method is util.promisify() ed, it returns a promise for anObject with bytesWritten and buffers properties.

    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.

    Since

    v0.0.67

    Parameters

    • fd: number
    • buffers: readonly ArrayBufferView[]
    • cb: ((err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]) => void)
        • (err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]): void
        • Parameters

          • err: SystemError
          • bytesWritten: number
          • buffers: ArrayBufferView[]

          Returns void

    Returns void

  • Parameters

    • fd: number
    • buffers: readonly ArrayBufferView[]
    • position: number
    • cb: ((err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]) => void)
        • (err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]): void
        • Parameters

          • err: SystemError
          • bytesWritten: number
          • buffers: ArrayBufferView[]

          Returns void

    Returns void

  • Write an array of ArrayBufferViews to the file specified by fd usingwritev().

    position is the offset from the beginning of the file where this data should be written. If typeof position !== 'number', the data will be written at the current position.

    The callback will be given three arguments: err, bytesWritten, andbuffers. bytesWritten is how many bytes were written from buffers.

    If this method is util.promisify() ed, it returns a promise for anObject with bytesWritten and buffers properties.

    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.

    Since

    v0.0.67

    Parameters

    • fd: number
    • buffers: readonly ArrayBufferView[]
    • cb: ((err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]) => void)
        • (err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]): void
        • Parameters

          • err: SystemError
          • bytesWritten: number
          • buffers: ArrayBufferView[]

          Returns void

    Returns void

  • Parameters

    • fd: number
    • buffers: readonly ArrayBufferView[]
    • position: number
    • cb: ((err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]) => void)
        • (err: SystemError, bytesWritten: number, buffers: ArrayBufferView[]): void
        • Parameters

          • err: SystemError
          • bytesWritten: number
          • buffers: ArrayBufferView[]

          Returns void

    Returns void

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