# Method Stdio.NonblockingStream()->set_write_callback()

Method set_write_callback

  ``NonblockingStream` set_read_callback(`function`(:`void`) `f`, `mixed` ... `rest`)`
  ``NonblockingStream` set_write_callback(`function`(:`void`) `f`, `mixed` ... `rest`)`
  ``NonblockingStream` set_close_callback(`function`(:`void`) `f`, `mixed` ... `rest`)`
  ``NonblockingStream` set_fs_event_callback(`function`(:`void`) `f`, `int` `event_mask`, `mixed` ... `rest`)`