}

// IsARMCMP reports whether the op (as defined by an arm.A* constant) is
// one of the comparison instructions that require special handling.
func IsARMCMP(op obj.As) bool {
	switch op {
	case arm.ACMN, arm.ACMP, arm.ATEQ, arm.ATST:
		return true
	}
	return false
}

// IsARMSTREX reports whether the op (as defined by an arm.A* constant) is
// one of the STREX-like instructions that require special handling.

    return new SampleElements<>(
        mapEntry("one", "January"),
        mapEntry("two", "February"),
        mapEntry("three", "March"),
        mapEntry("four", "April"),
        mapEntry("five", "May"));
  }

  @Override
  public SampleElements<String> sampleKeys() {
    return new SampleElements<>("one", "two", "three", "four", "five");
  }

  @Override

    return new SampleElements<>(
        mapEntry("one", "January"),
        mapEntry("two", "February"),
        mapEntry("three", "March"),
        mapEntry("four", "April"),
        mapEntry("five", "May"));
  }

  @Override
  public SampleElements<String> sampleKeys() {
    return new SampleElements<>("one", "two", "three", "four", "five");
  }

  @Override

import static com.google.common.collect.testing.features.CollectionFeature.NON_STANDARD_TOSTRING;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;

import com.google.common.annotations.GwtCompatible;

import static com.google.common.collect.testing.features.CollectionFeature.NON_STANDARD_TOSTRING;
import static com.google.common.collect.testing.features.CollectionSize.ONE;
import static com.google.common.collect.testing.features.CollectionSize.SEVERAL;
import static com.google.common.collect.testing.features.CollectionSize.ZERO;

import com.google.common.annotations.GwtCompatible;

		if s.end == maxInt {
			s.fillReq <- struct{}{}
		}
	}

	s.pos++
	return s.buf[s.ipos]
}

// back undoes a previous call to next(), moving backward one byte in the internal buffer.
// as we only guarantee a lookback buffer size of one, any subsequent calls to back()
// before calling next() may panic
func (s *scanner) back() {
	if s.ipos <= 0 {
		panic("back buffer exhausted")
	}
	s.ipos--
	s.pos--

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}


@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

### Dockerfile { #dockerfile }

Agora, no mesmo diretório do projeto, crie um arquivo `Dockerfile` com:

```{ .dockerfile .annotate }
# (1)!

errors.password_no_uppercase = Password must contain at least one uppercase letter.
errors.password_no_lowercase = Password must contain at least one lowercase letter.
errors.password_no_digit = Password must contain at least one digit.
errors.password_no_special_char = Password must contain at least one special character.
errors.password_is_blacklisted = Password is not allowed. Please choose a different password.

errors.password_no_uppercase = Password must contain at least one uppercase letter.
errors.password_no_lowercase = Password must contain at least one lowercase letter.
errors.password_no_digit = Password must contain at least one digit.
errors.password_no_special_char = Password must contain at least one special character.
errors.password_is_blacklisted = Password is not allowed. Please choose a different password.

レスポンスモデルには次のようにデフォルト値を設定できます:

{* ../../docs_src/response_model/tutorial004_py310.py hl[9,11:12] *}

* `description: Union[str, None] = None`（またはPython 3.10では `str | None = None`）はデフォルトが `None` です。
* `tax: float = 10.5` はデフォルトが `10.5` です。
* `tags: List[str] = []` はデフォルトが空のリスト `[]` です。

ただし、それらが実際には保存されていない場合、結果から省略したいことがあります。

例えば、NoSQLデータベースに多くのオプション属性を持つモデルがあるが、デフォルト値でいっぱいの非常に長いJSONレスポンスを送信したくない場合です。