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instance method

IO#close

ios.close → nil

static VALUE
rb_io_close_m(VALUE io)
{
    rb_io_t *fptr = rb_io_get_fptr(io);
    if (fptr->fd < 0) {
        return Qnil;
    }
    rb_io_close(io);
    return Qnil;
}

Closes ios and flushes any pending writes to the operating system. The stream is unavailable for any further data operations; an IOError is raised if such an attempt is made. I/O streams are automatically closed when they are claimed by the garbage collector.

If ios is opened by IO.popen, close sets $?.

Calling this method on closed IO object is just ignored since Ruby 2.3.

See also #clear_screen #closed? #check_winsize_changed #close_on_exec= also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

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