sub slick()
{
    if do-stuff
    {
      return IntStr.new: 1, "SomeValue";
    }
    else
    {
      return IntStr.new: 0, "Some error message";
    }
}

my $result = slick;
if +$result
{
    process( ~$result );
}
else
{
    log-error( ~$result );
}