</p>

<pre>
var a string
var done bool

func setup() {
	a = "hello, world"
	done = true
}

func doprint() {
	if !done {
		once.Do(setup)
	}
	print(a)
}

func twoprint() {
	go doprint()
	go doprint()
}
</pre>

<p>
but there is no guarantee that, in <code>doprint</code>, observing the write to <code>done</code>

		return err
	}
	ctx, done, err := p.TrackDiskHealth(ctx, storageMetricWalkDir, opts.Bucket, opts.BaseDir)
	if err != nil {
		return err
	}
	defer done(0, &err)

	return p.storage.WalkDir(ctx, opts, wr)
}

// WalkDir will traverse a directory and return all entries found.
// On success a meta cache stream will be returned, that should be closed when done.

MinIO server expects environment variable for etcd as `MINIO_ETCD_ENDPOINTS`, this environment variable takes many comma separated entries.

```
export MINIO_ETCD_ENDPOINTS=http://localhost:2379
minio server /data
```

	if len(listener.listeners) == 1 {
		return addr
	}

	if tcpAddr, ok := addr.(*net.TCPAddr); ok {
		return &net.TCPAddr{
			IP:   net.IPv4zero,
			Port: tcpAddr.Port,
			Zone: tcpAddr.Zone,
		}
	}
	panic("unknown address type on listener")
}

// Addrs - returns all address information of TCP listeners.
func (listener *httpListener) Addrs() (addrs []net.Addr) {

│ 1st │ http://minio{1...2}/data{1...4} │ 439 GiB (used) / 561 GiB (total) │ Draining │
└─────┴─────────────────────────────────┴──────────────────────────────────┴──────────┘
```

## Middlewares Integrados { #integrated-middlewares }

**FastAPI** inclui vários middlewares para casos de uso comuns, veremos a seguir como usá-los.

/// note | Detalhes Técnicos

Para os próximos exemplos, você também poderia usar `from starlette.middleware.something import SomethingMiddleware`.

   "/${TARGET}/usr/lib64"
;;
esac

# Link in architecture specific includes from the system; note that we cannot
# link in the whole x86_64-linux-gnu folder, as otherwise we're overlaying
# system gcc paths that we do not want to find.
# TODO(klimek): Automate linking in all non-gcc / non-kernel include
# directories.
mkdir -p "/${TARGET}/usr/include/x86_64-linux-gnu"

//   use them in new code.
// - Every node in the function's body must have all of its inputs (including
//   control inputs). In other words, for every node in the body, each input
//   must be either listed in `inputs` or must come from another node in
//   the body. In particular, it is an error to have a control edge going from
//   a node outside of the body into a node in the body. This applies to control

		}

		participants[i] = ps.Participating
	}
	z.rebalMu.RUnlock()

	for poolIdx, doRebalance := range participants {
		if !doRebalance {
			continue
		}
		// nothing to do if this node is not pool's first node (i.e pool's rebalance 'leader').
		if !globalEndpoints[poolIdx].Endpoints[0].IsLocal {
			continue
		}

		go func(idx int) {
			stopfn := globalRebalanceMetrics.log(rebalanceMetricRebalanceBuckets, idx)

  set +u
  for env_file in ${TFCI//,/ }; do
    source "./ci/official/envs/$env_file"
  done
  set -u
  echo '==TFCI==: Evaluated the following TFCI variables from $TFCI:'
  export -p | grep TFCI

  # Load those stored pre-existing TFCI_ vars, if any
  if [[ -s "$FROM_ENV" ]]; then
    echo '==TFCI==: NOTE: Loading the following env parameters, which were'