Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →

instance method

StringIO#lineno

() -> ::Integer

lineno → current_line_number

ext/stringio/stringio.c View on GitHub ↗

static VALUE
strio_get_lineno(VALUE self)
{
    return LEN2NUM(StringIOForRead(self)->lineno);
}

Returns the current line number in self; see Line Number.

See also #lineno= #length #isatty #pid also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0