Function setLen [src]
Sets the length of an Managed.
If setLen is used, then the Managed must be normalized to suit.
  Prototype
 pub fn setLen(self: *Managed, new_len: usize) void  Parameters
self: *Managednew_len: usize Source
 pub fn setLen(self: *Managed, new_len: usize) void {
    self.metadata &= sign_bit;
    self.metadata |= new_len;
}