case WILL_CREATE_VALUE_AND_CLOSER:
          throw new IllegalStateException("Cannot call finishToValueAndCloser() twice");

        case OPEN:
          break;
      }
      throw new AssertionError(state);
    }
    future.addListener(() -> provideValueAndCloser(consumer, ClosingFuture.this), executor);
  }

# 並行処理と async / await

*path operation 関数*のための `async def` に関する詳細と非同期 (asynchronous) コード、並行処理 (Concurrency)、そして、並列処理 (Parallelism) の背景について。

## 急いでいますか？

<abbr title="too long; didn't read (長すぎて読めない人のための要約という意味のスラング)"><strong>TL;DR:</strong></abbr>

次のような、`await` を使用して呼び出すべきサードパーティライブラリを使用している場合:

```Python
results = await some_library()
```

以下の様に `async def` を使用して*path operation 関数*を宣言します。

```Python hl_lines="2"
@app.get('/')

    - [Container Images](#container-images-15)
  - [Changelog since v1.25.0](#changelog-since-v1250)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-15)
    - [Deprecation](#deprecation)
    - [API Change](#api-change-8)
    - [Feature](#feature-15)

t.touches[0].clientX-t.touchStartX}(e)})),o.default(this._element).on("touchend.bs.carousel",(function(t){return n(t)})))}},e._keydown=function(t){if(!/input|textarea/i.test(t.target.tagName))switch(t.which){case 37:t.preventDefault(),this.prev();break;case 39:t.preventDefault(),this.next()}},e._getItemIndex=function(t){return this._items=t&&t.parentNode?[].slice.call(t.parentNode.querySelectorAll(".carousel-item")):[],this._items.indexOf(t)},e._getItemByDirection=function(t,e){var n=t===N,i=t==...

GOEXPERIMENT=cgocheck2 at build time.

It is possible to defeat this enforcement by using the unsafe package,
and of course there is nothing stopping the C code from doing anything
it likes. However, programs that break these rules are likely to fail
in unexpected and unpredictable ways.

The runtime/cgo.Handle type can be used to safely pass Go values
between Go and C. See the runtime/cgo package documentation for details.

pkg syscall (freebsd-riscv64), const CLOCAL = 32768 #53466
pkg syscall (freebsd-riscv64), const CLOCAL ideal-int #53466
pkg syscall (freebsd-riscv64), const CREAD = 2048 #53466
pkg syscall (freebsd-riscv64), const CREAD ideal-int #53466
pkg syscall (freebsd-riscv64), const CS5 = 0 #53466
pkg syscall (freebsd-riscv64), const CS5 ideal-int #53466
pkg syscall (freebsd-riscv64), const CS6 = 256 #53466

    * In a future release, the value of this flag will be defaulted...

pkg mime, type WordEncoder uint8
pkg mime/quotedprintable, func NewReader(io.Reader) *Reader
pkg mime/quotedprintable, func NewWriter(io.Writer) *Writer
pkg mime/quotedprintable, method (*Reader) Read([]uint8) (int, error)
pkg mime/quotedprintable, method (*Writer) Close() error
pkg mime/quotedprintable, method (*Writer) Write([]uint8) (int, error)
pkg mime/quotedprintable, type Reader struct

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rec.br
rec.nf
rec.ro

pkg syscall (darwin-386), const CFLUSH ideal-int
pkg syscall (darwin-386), const CLOCAL = 32768
pkg syscall (darwin-386), const CLOCAL ideal-int
pkg syscall (darwin-386), const CREAD = 2048
pkg syscall (darwin-386), const CREAD ideal-int
pkg syscall (darwin-386), const CS5 = 0
pkg syscall (darwin-386), const CS5 ideal-int
pkg syscall (darwin-386), const CS6 = 256
pkg syscall (darwin-386), const CS6 ideal-int