This is useful when you want to have optional authentication.

                It is also useful when you want to have authentication that can be
                provided in one of multiple optional ways (for example, in HTTP Basic
                authentication or in an HTTP Bearer token).
                """
            ),
        ] = True,
    ):

 * instances is using {@link CacheBuilder}.
 *
 * <p>Implementations of this interface are expected to be thread-safe, and can be safely accessed
 * by multiple concurrent threads.
 *
 * <p>When evaluated as a {@link Function}, a cache yields the same result as invoking {@link
 * #getUnchecked}.
 *
 * @param <K> the type of the cache's keys, which are not permitted to be null

	for i := 0; i < dynamicTimeoutLogSize; i++ {
		timeout.LogFailure()
	}

	adjustedAgain := timeout.Timeout()

	if initial >= adjusted || adjusted >= adjustedAgain {
		t.Errorf("Failure to increase timeout multiple times")
	}
}

func TestDynamicTimeoutSingleDecrease(t *testing.T) {
	timeout := newDynamicTimeout(time.Minute, time.Second)

	initial := timeout.Timeout()

	for i := 0; i < dynamicTimeoutLogSize; i++ {

```

or any other case variation (uppercase, first letter in uppercase, etc), your function will see the parameter `short` with a `bool` value of `True`. Otherwise as `False`.


## Multiple path and query parameters

You can declare multiple path parameters and query parameters at the same time, **FastAPI** knows which is which.

And you don't have to declare them in any specific order.

They will be detected by name:

//go:build ignore

// Compute Fibonacci numbers with two goroutines
// that pass integers back and forth.  No actual
// concurrency, just threads and synchronization
// and foreign code on multiple pthreads.

package main

import (
	big "."
	"runtime"
)

func fibber(c chan *big.Int, out chan string, n int64) {
	// Keep the fibbers in dedicated operating system

		// Operator for the current policy condition
		op := policy.Operator
		// Multiple values should not occur
		if len(checkHeader[formCanonicalName]) >= 2 {
			return fmt.Errorf("Invalid according to Policy: Policy Condition failed: [%s, %s, %s]. FormValues have multiple values: [%s]", op, policy.Key, policy.Value, strings.Join(checkHeader[formCanonicalName], ", "))
		}

read_query["/items/"]

query_extractor --> query_or_cookie_extractor --> read_query
```

## Utilizando a mesma dependência múltiplas vezes

Se uma de suas dependências é declarada várias vezes para a mesma *operação de rota*, por exemplo, múltiplas dependências com uma mesma subdependência, o **FastAPI** irá chamar essa subdependência uma única vez para cada requisição.

		Distribution: hashOrder(object, dataBlocks+parityBlocks),
	}
	return fi
}

// ReadMultipleReq contains information of multiple files to read from disk.
type ReadMultipleReq struct {
	Bucket       string   `msg:"bk"`           // Bucket. Can be empty if multiple buckets.
	Prefix       string   `msg:"pr,omitempty"` // Shared prefix of all files. Can be empty. Will be joined to filename without modification.

   * size, using an internal buffer of {@code bufferSize} size, which must be a multiple of {@code
   * chunkSize}.
   *
   * @param chunkSize the number of bytes available per {@link #process(ByteBuffer)} invocation;
   *     must be at least 4
   * @param bufferSize the size of the internal buffer. Must be a multiple of chunkSize
   */
  protected AbstractStreamingHasher(int chunkSize, int bufferSize) {

When you need to declare dependencies with OAuth2 scopes you use `Security()`.

But you still need to define what is the dependable, the callable that you pass as a parameter to `Depends()` or `Security()`.

There are multiple tools that you can use to create those dependables, and they get integrated into OpenAPI so they are shown in the automatic docs UI, they can be used by automatically generated clients and SDKs, etc.