* @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class StatsAccumulator {
  /** Creates a new accumulator. */
  public StatsAccumulator() {}

  // These fields must satisfy the requirements of Stats' constructor as well as those of the stat
  // methods of this class.
  private long count = 0;
  private double mean = 0.0; // any finite value will do, we only use it to multiply by zero for sum

**Typer** ist die kleine Schwester von FastAPI. Und es soll das **FastAPI der CLIs** sein. ⌨️ 🚀

## Anforderungen { #requirements }

FastAPI steht auf den Schultern von Giganten:

* [Starlette](https://www.starlette.dev/) für die Webanteile.
* [Pydantic](https://docs.pydantic.dev/) für die Datenanteile.

- As a contributor, you submit a New PR on GitHub.
- We inspect every incoming PR and add certain labels to the PR such as `size:`,
  `comp:` etc.  At this stage we check if the PR is valid and meets certain
  quality requirements. For example, we check if the CLA is signed, PR has
  sufficient description, if applicable unit tests are added, if it is a
  reasonable contribution (meaning it is not a single liner cosmetic PR).

**2. Valid?**

如果你要开发一个用于终端的 <abbr title="Command Line Interface - 命令行界面">命令行</abbr>应用而不是 Web API，看看 [**Typer**](https://typer.tiangolo.com/)。

**Typer** 是 FastAPI 的小同胞。它的目标是成为**命令行中的 FastAPI**。⌨️ 🚀

## 依赖 { #requirements }

FastAPI 站在巨人的肩膀之上：

* [Starlette](https://www.starlette.dev/) 负责 Web 部分。
* [Pydantic](https://docs.pydantic.dev/) 负责数据部分。

## 安装 { #installation }

// bucket and false otherwise.
func isMinioMetaBucketName(bucket string) bool {
	return strings.HasPrefix(bucket, minioMetaBucket)
}

// IsValidBucketName verifies that a bucket name is in accordance with
// Amazon's requirements (i.e. DNS naming conventions). It must be 3-63
// characters long, and it must be a sequence of one or more labels
// separated by periods. Each label can contain lowercase ascii

**Typer** es el hermano pequeño de FastAPI. Y está destinado a ser el **FastAPI de las CLIs**. ⌨️ 🚀

## Requisitos { #requirements }

FastAPI se apoya en hombros de gigantes:

* [Starlette](https://www.starlette.dev/) para las partes web.
* [Pydantic](https://docs.pydantic.dev/) para las partes de datos.

**Typer** é o irmão menor do FastAPI. E seu propósito é ser o **FastAPI das CLIs**. ⌨️ 🚀

## Requisitos { #requirements }

FastAPI está nos ombros de gigantes:

* [Starlette](https://www.starlette.dev/) para as partes web.
* [Pydantic](https://docs.pydantic.dev/) para a parte de dados.

## Instalação { #installation }

  // have two requirements that significantly complicate their design.
  // 1. Cancellation should propagate from the returned future to the input future(s).
  // 2. The returned futures shouldn't unnecessarily 'pin' their inputs after completion.
  //
  // A consequence of these requirements is that the delegate futures cannot be stored in
  // final fields.
  //

**Typer** — младший брат FastAPI. И он задуман как **FastAPI для CLI**. ⌨️ 🚀

## Зависимости { #requirements }

FastAPI стоит на плечах гигантов:

* [Starlette](https://www.starlette.dev/) для части, связанной с вебом.
* [Pydantic](https://docs.pydantic.dev/) для части, связанной с данными.

**Typer** est le petit frère de FastAPI. Et il est destiné à être le **FastAPI des CLIs**. ⌨️ 🚀

## Prérequis { #requirements }

FastAPI repose sur les épaules de géants :

* [Starlette](https://www.starlette.dev/) pour les parties web.
* [Pydantic](https://docs.pydantic.dev/) pour les parties données.