Method: String#reverse!

Defined in:
string.c

#reverse! ⇒ String

Reverses str in place.

Returns:



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# File 'string.c', line 5675

static VALUE
rb_str_reverse_bang(VALUE str)
{
    if (RSTRING_LEN(str) > 1) {
  if (single_byte_optimizable(str)) {
      char *s, *e, c;

      str_modify_keep_cr(str);
      s = RSTRING_PTR(str);
      e = RSTRING_END(str) - 1;
      while (s < e) {
    c = *s;
    *s++ = *e;
    *e-- = c;
      }
  }
  else {
      str_shared_replace(str, rb_str_reverse(str));
  }
    }
    else {
  str_modify_keep_cr(str);
    }
    return str;
}