*
   * <p>Why <i>not</i> just add {@code SuppressWarnings}? The problem is that this method is
   * typically useful for {@code return} statements. That leaves the code with two options: Either
   * add the suppression to the whole method (which turns off checking for a large section of code),
   * or extract a variable, and put the suppression on that. However, a local variable typically

   *
   * <p>Why <i>not</i> just add {@code SuppressWarnings}? The problem is that this method is
   * typically useful for {@code return} statements. That leaves the code with two options: Either
   * add the suppression to the whole method (which turns off checking for a large section of code),
   * or extract a variable, and put the suppression on that. However, a local variable typically

即使它们都在 `localhost` 中，但是它们使用不同的协议或者端口，所以它们都是不同的「源」。

## 步骤

假设你的浏览器中有一个前端运行在 `http://localhost:8080`，并且它的 JavaScript 正在尝试与运行在 `http://localhost` 的后端通信（因为我们没有指定端口，浏览器会采用默认的端口 `80`）。

然后，浏览器会向后端发送一个 HTTP `OPTIONS` 请求，如果后端发送适当的 headers 来授权来自这个不同源（`http://localhost:8080`）的通信，浏览器将允许前端的 JavaScript 向后端发送请求。

为此，后端必须有一个「允许的源」列表。

在这种情况下，它必须包含 `http://localhost:8080`，前端才能正常工作。

## 通配符

也可以使用 `"*"`（一个「通配符」）声明这个列表，表示全部都是允许的。

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cachevalue

import (
	"context"
	"sync"
	"sync/atomic"
	"time"
)

// Opts contains options for the cache.
type Opts struct {
	// When set to true, return the last cached value
	// even if updating the value errors out.
	// Returns the last good value AND the error.
	ReturnLastGood bool

	if len(*m) == 0 {
		return ""
	}
	return fmt.Sprint(*m)
}

func (m *MultiFlag) Set(val string) error {
	(*m) = append(*m, val)
	return nil
}

func Usage() {
	fmt.Fprintf(os.Stderr, "usage: asm [options] file.s ...\n")
	fmt.Fprintf(os.Stderr, "Flags:\n")
	flag.PrintDefaults()
	os.Exit(2)
}

func Parse() {
	objabi.Flagparse(Usage)
	if flag.NArg() == 0 {
		flag.Usage()
	}

	// Flag refinement.

        }

        // check for presence of deprecated options and print warning
        boolean fail = false;
        for (Option option : cliRequest.commandLine.getOptions()) {
            if (option.isDeprecated()) {
                StringBuilder sb = new StringBuilder();
                sb.append("The option -").append(option.getOpt());
                if (option.getLongOpt() != null) {

1	073	153	object | {"colors":["cyan","magenta","yellow","black"],"desc":"CMYK"}
0	000	155	array  | [{"colors":["red","green","blue"],"desc":"RGB"},{"colors":["cyan","magenta","yellow","black"],"desc":"CMYK"}]
```

### Options

Opt | Description
--- | ---
-d \<n\> | emit values at depth n. if n < 0, all values will be emitted
-kv | output inner key value pairs as newly formed objects
-v | output depth and offset details for each value

 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultToolchainsWriter implements ToolchainsWriter {

    @Override
    public void write(Writer output, Map<String, Object> options, PersistedToolchains toolchains) throws IOException {
        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(toolchains, "toolchains cannot be null");

        try (Writer out = output) {

 * and we can't rely on classnames after proguard, so are probably best served by falling through
 * to a situation of trying our least likely noisiest options.
 */
class DeferredSocketAdapter(private val socketAdapterFactory: Factory) : SocketAdapter {
  private var delegate: SocketAdapter? = null

  override fun isSupported(): Boolean {
    return true
  }

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

pipeline {
  agent { node { label 'ubuntu' } }
  options {
    durabilityHint('PERFORMANCE_OPTIMIZED')
    buildDiscarder(logRotator(numToKeepStr: '20', artifactNumToKeepStr: '5'))
    timeout(time: 180, unit: 'MINUTES')
  }
  parameters {