End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

StringIO#pid

pid

ext/stringio/stringio.c View on GitHub ↗

static VALUE
strio_nil(VALUE self)
{
    StringIO(self);
    return Qnil;
}

Returns nil. Just for compatibility to IO.

See also #lineno= #pos #lineno #pos= also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1