from datetime import datetime
from typing import List, Union

from pydantic import BaseModel


class User(BaseModel):
    id: int
    name: str = "John Doe"
    signup_ts: Union[datetime, None] = None
    friends: List[int] = []


external_data = {
    "id": "123",
    "signup_ts": "2017-06-01 12:22",
    "friends": [1, "2", b"3"],
}
user = User(**external_data)
print(user)

from pydantic import BaseModel, Field
from typing_extensions import Literal

app = FastAPI()


class FilterParams(BaseModel):
    class Config:
        extra = "forbid"

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: List[str] = []


@app.get("/items/")
async def read_items(filter_query: FilterParams = Query()):

     * @param key
     * @throws GeneralSecurityException
     */
    private static void verifyAESMAC ( int usage, String expect, String data, String key ) throws GeneralSecurityException {
        verifyAESHMAC(usage, expect, key, Hex.decode(data));
    }


    private static void verifyArcfourHMAC ( int usage, String expect, String data, String key ) throws GeneralSecurityException {

    static final int DEFAULT_INITIAL_CAPACITY = 4;

    static int expandedCapacity(int oldCapacity, int minCapacity) {
      if (minCapacity < 0) {
        throw new IllegalArgumentException("cannot store more than MAX_VALUE elements");
      } else if (minCapacity <= oldCapacity) {
        return oldCapacity;
      }
      // careful of overflow!
      int newCapacity = oldCapacity + (oldCapacity >> 1) + 1;

        }
    }
    static byte[] computeResponse(byte[] responseKey,
                byte[] serverChallenge,
                byte[] clientData,
                int offset,
                int length)
    {
        HMACT64 hmac = new HMACT64(responseKey);
        hmac.update(serverChallenge);
        hmac.update(clientData, offset, length);
        byte[] mac = hmac.digest();

func BenchmarkRequests(b *testing.B) {
	for n := 2; n <= 32; n *= 2 {
		b.Run("servers="+strconv.Itoa(n), func(b *testing.B) {
			benchmarkGridRequests(b, n)
		})
	}
}

func benchmarkGridRequests(b *testing.B, n int) {
	defer testlogger.T.SetErrorTB(b)()
	errFatal := func(err error) {
		b.Helper()
		if err != nil {
			b.Fatal(err)
		}
	}

  static byte[] newPreFilledByteArray(int size) {
    return newPreFilledByteArray(0, size);
  }

  /** Returns a byte array of length size that has values offset .. offset + size - 1. */
  static byte[] newPreFilledByteArray(int offset, int size) {
    byte[] array = new byte[size];
    for (int i = 0; i < size; i++) {
      array[i] = (byte) (offset + i);
    }
    return array;

import jakarta.validation.ConstraintValidator;
import jakarta.validation.ConstraintValidatorContext;

public class CustomSizeValidator implements ConstraintValidator<CustomSize, CharSequence> {
    private int min = 0;
    private int max = Integer.MAX_VALUE;
    private String message;

    @Override
    public void initialize(final CustomSize constraintAnnotation) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    assertEquals(OBJECT, Atomics.newReference(OBJECT).get());
  }

  public void testNewReferenceArray_withLength() throws Exception {
    int length = 42;
    AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length);
    for (int i = 0; i < length; ++i) {
      assertEquals(null, refArray.get(i));
    }
    assertThrows(IndexOutOfBoundsException.class, () -> refArray.get(length));
  }

    PROTECTED {
      @Override
      boolean isVisible(int modifiers) {
        return Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers);
      }
    },

    PUBLIC {
      @Override
      boolean isVisible(int modifiers) {
        return Modifier.isPublic(modifiers);
      }
    };

    abstract boolean isVisible(int modifiers);