// +optional
  optional bool hostNetwork = 6;

  // hostPorts determines which host port ranges are allowed to be exposed.
  // +optional
  repeated HostPortRange hostPorts = 7;

  // hostPID determines if the policy allows the use of HostPID in the pod spec.
  // +optional
  optional bool hostPID = 8;

pkg net/http, type Cookie struct, Quoted bool #46443...

pkg net/http, method (*ResponseController) EnableFullDuplex() error #57786
pkg net/http, var ErrSchemeMismatch error #44855
pkg net, method (*Dialer) MultipathTCP() bool #56539
pkg net, method (*Dialer) SetMultipathTCP(bool) #56539
pkg net, method (*ListenConfig) MultipathTCP() bool #56539
pkg net, method (*ListenConfig) SetMultipathTCP(bool) #56539
pkg net, method (*TCPConn) MultipathTCP() (bool, error) #59166

pkg sort, func Find(int, func(int) int) (int, bool) #50340
pkg sync/atomic, method (*Bool) CompareAndSwap(bool, bool) bool #50860
pkg sync/atomic, method (*Bool) Load() bool #50860
pkg sync/atomic, method (*Bool) Store(bool) #50860
pkg sync/atomic, method (*Bool) Swap(bool) bool #50860
pkg sync/atomic, method (*Int32) Add(int32) int32 #50860
pkg sync/atomic, method (*Int32) CompareAndSwap(int32, int32) bool #50860

pkg reflect, type Type interface, OverflowComplex(complex128) bool #60427
pkg reflect, type Type interface, OverflowFloat(float64) bool #60427
pkg reflect, type Type interface, OverflowInt(int64) bool #60427

pkg debug/elf, type R_390 int
pkg encoding/json, method (*Encoder) SetEscapeHTML(bool)
pkg encoding/json, method (*Encoder) SetIndent(string, string)
pkg go/build, type Package struct, BinaryOnly bool
pkg go/build, type Package struct, CgoFFLAGS []string
pkg go/build, type Package struct, FFiles []string
pkg go/doc, type Example struct, Unordered bool
pkg io, const SeekCurrent = 1
pkg io, const SeekCurrent ideal-int

pkg net, method (*ParseError) Temporary() bool
pkg net, method (*ParseError) Timeout() bool
pkg net, method (IP) IsPrivate() bool
pkg net/http, func AllowQuerySemicolons(Handler) Handler
pkg net/url, method (Values) Has(string) bool
pkg reflect, func VisibleFields(Type) []StructField
pkg reflect, method (Method) IsExported() bool
pkg reflect, method (StructField) IsExported() bool
pkg reflect, method (Value) CanConvert(Type) bool

```

この場合、関数パラメータ `q` はオプショナルとなり、デフォルトでは `None` になります。

!!! check "確認"
    パスパラメータ `item_id` はパスパラメータであり、`q` はそれとは違ってクエリパラメータであると判別できるほど**FastAPI** が賢いということにも注意してください。

## クエリパラメータの型変換

`bool` 型も宣言できます。これは以下の様に変換されます:

```Python hl_lines="9"
{!../../../docs_src/query_params/tutorial003.py!}
```

この場合、以下にアクセスすると:

```
http://127.0.0.1:8000/items/foo?short=1
```

もしくは、

```

  optional string namespace = 3;
}

// ImageReviewStatus is the result of the review for the pod creation request.
message ImageReviewStatus {
  // Allowed indicates that all images were allowed to be run.
  optional bool allowed = 1;

  // Reason should be empty unless Allowed is false in which case it
  // may contain a short description of what is wrong.  Kubernetes
  // may truncate excessively long errors when displaying to the user.

  // Defaults to false.
  // +optional
  optional bool stdin = 1;

  // Stdout if true indicates that stdout is to be redirected for the attach call.
  // Defaults to true.
  // +optional
  optional bool stdout = 2;

  // Stderr if true indicates that stderr is to be redirected for the attach call.
  // Defaults to true.
  // +optional
  optional bool stderr = 3;