/// info

`Query`, `Path`, and other classes you will see later are subclasses of a common `Param` class.

All of them share the same parameters for additional validation and metadata you have seen.

///

/// note | Technical Details

When you import `Query`, `Path` and others from `fastapi`, they are actually functions.

That when called, return instances of classes of the same name.

 * successful (non-null parameters), or failed (non-null throwable). The first common parameters of
 * each event pair are used to link the event in case of concurrent or repeated events e.g.
 * `dnsStart(call, domainName)` → `dnsEnd(call, domainName, inetAddressList)`.
 *
 * Events are typically nested with this structure:
 *
 *  * call ([callStart], [callEnd], [callFailed])

         * check).
         *
         * We *would* just check such functions redundantly, but kotlinc emits its nullness
         * annotations in the form of JetBrains annotations, which have only class retention and
         * thus are invisible at runtime. Thus, we conclude that the parameter types are

  - type: markdown
    attributes:
      value: |
        Translations are automatized with AI and then reviewed by native speakers. 🤖 🙋

        This allows us to keep them consistent and up-to-date.

        If there are several native speakers commenting on this discussion and
        committing to help review new translations, the FastAPI team will review it

    * So, by using FastAPI you are saving development time, bugs, lines of code, and you would probably get the same performance (or better) you would if you didn't use it (as you would have to implement it all in your code).

        "ClassCanBeStatic", // We should enable this.

        // DISCUSS
        "EnumOrdinal", // This violation is ubiquitous, though most are benign.
        "EqualsGetClass", // Let's agree if we want to adopt Error Prone's idea of valid equals()
        "JdkObsolete", // Most of the checks are good, but we do not want to replace all LinkedLists without a good reason

        // NEVER

	// metacacheBlockSize is the number of file/directory entries to have in each block.
	metacacheBlockSize = 5000

	// metacacheSharePrefix controls whether prefixes on dirty paths are always shared.
	// This will make `test/a` and `test/b` share listings if they are concurrent.
	// Enabling this will make cache sharing more likely and cause less IO,
	// but may cause additional latency to some calls.
	metacacheSharePrefix = false
)

There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the
BSD-style license found in the LICENSE file.

### Download and Install

#### Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install
for installation instructions.

 *
 * <p>Listeners are registered once via {@link #addListener} and then may be invoked by {@linkplain
 * #enqueue enqueueing} and then {@linkplain #dispatch dispatching} events.
 *
 * <p>The API of this class is designed to make it easy to achieve the following properties
 *
 * <ul>
 *   <li>Multiple events for the same listener are never dispatched concurrently.

    public void setPageNumberList(final List<String> pageNumberList) {
        this.pageNumberList = pageNumberList;
    }

    /**
     * Sets whether the results are partial due to timeout or other issues.
     *
     * @param partialResults true if results are partial
     */
    public void setPartialResults(final boolean partialResults) {
        this.partialResults = partialResults;
    }

    /**