IO::generic_readable#readchar

readchar → string

ext/stringio/stringio.c View on GitHub ↗

static VALUE
strio_readchar(VALUE self)
{
    VALUE c = rb_funcallv(self, rb_intern("getc"), 0, 0);
    if (NIL_P(c)) rb_eof_error();
    return c;
}

Like getc, but raises an exception if already at end-of-stream; see Character IO.

See also #readbyte #readline #getpass #read_nonblock also in 3.2 · 3.1 · 3.0