本文整理了Java中com.google.common.hash.HashCode.fromBytesNoCopy()方法的一些代码示例，展示了HashCode.fromBytesNoCopy()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。HashCode.fromBytesNoCopy()方法的具体详情如下：
包路径：com.google.common.hash.HashCode
类名称：HashCode
方法名：fromBytesNoCopy

HashCode.fromBytesNoCopy介绍

[英]Creates a HashCode from a byte array. The array is not copied defensively, so it must be handed-off so as to preserve the immutability contract of HashCode.
[中]从字节数组创建哈希代码。数组不是防御性复制的，因此必须将其传递，以保持哈希代码的不变性契约。

代码示例

代码示例来源：origin: google/guava

/**
 * Creates a {@code HashCode} from a byte array. The array is defensively copied to preserve the
 * immutability contract of {@code HashCode}. The array cannot be empty.
 *
 * @since 15.0 (since 12.0 in HashCodes)
 */
public static HashCode fromBytes(byte[] bytes) {
 checkArgument(bytes.length >= 1, "A HashCode must contain at least 1 byte.");
 return fromBytesNoCopy(bytes.clone());
}

代码示例来源：origin: google/guava

@Override
 public HashCode hash() {
  checkNotDone();
  done = true;
  return (bytes == digest.getDigestLength())
    ? HashCode.fromBytesNoCopy(digest.digest())
    : HashCode.fromBytesNoCopy(Arrays.copyOf(digest.digest(), bytes));
 }
}

代码示例来源：origin: google/guava

@Override
 public HashCode hash() {
  checkNotDone();
  done = true;
  return HashCode.fromBytesNoCopy(mac.doFinal());
 }
}

代码示例来源：origin: google/guava

@Override
public HashCode makeHash() {
 h1 ^= length;
 h2 ^= length;
 h1 += h2;
 h2 += h1;
 h1 = fmix64(h1);
 h2 = fmix64(h2);
 h1 += h2;
 h2 += h1;
 return HashCode.fromBytesNoCopy(
   ByteBuffer.wrap(new byte[CHUNK_SIZE])
     .order(ByteOrder.LITTLE_ENDIAN)
     .putLong(h1)
     .putLong(h2)
     .array());
}

代码示例来源：origin: google/guava

/**
 * Returns a hash code, having the same bit length as each of the input hash codes, that combines
 * the information of these hash codes in an unordered fashion. That is, whenever two equal hash
 * codes are produced by two calls to this method, it is <i>as likely as possible</i> that each
 * was computed from the <i>same</i> input hash codes in <i>some</i> order.
 *
 * @throws IllegalArgumentException if {@code hashCodes} is empty, or the hash codes do not all
 *     have the same bit length
 */
public static HashCode combineUnordered(Iterable<HashCode> hashCodes) {
 Iterator<HashCode> iterator = hashCodes.iterator();
 checkArgument(iterator.hasNext(), "Must be at least 1 hash code to combine.");
 byte[] resultBytes = new byte[iterator.next().bits() / 8];
 for (HashCode hashCode : hashCodes) {
  byte[] nextBytes = hashCode.asBytes();
  checkArgument(
    nextBytes.length == resultBytes.length, "All hashcodes must have the same bit length.");
  for (int i = 0; i < nextBytes.length; i++) {
   resultBytes[i] += nextBytes[i];
  }
 }
 return HashCode.fromBytesNoCopy(resultBytes);
}

代码示例来源：origin: google/guava

/**
 * Returns a hash code, having the same bit length as each of the input hash codes, that combines
 * the information of these hash codes in an ordered fashion. That is, whenever two equal hash
 * codes are produced by two calls to this method, it is <i>as likely as possible</i> that each
 * was computed from the <i>same</i> input hash codes in the <i>same</i> order.
 *
 * @throws IllegalArgumentException if {@code hashCodes} is empty, or the hash codes do not all
 *     have the same bit length
 */
public static HashCode combineOrdered(Iterable<HashCode> hashCodes) {
 Iterator<HashCode> iterator = hashCodes.iterator();
 checkArgument(iterator.hasNext(), "Must be at least 1 hash code to combine.");
 int bits = iterator.next().bits();
 byte[] resultBytes = new byte[bits / 8];
 for (HashCode hashCode : hashCodes) {
  byte[] nextBytes = hashCode.asBytes();
  checkArgument(
    nextBytes.length == resultBytes.length, "All hashcodes must have the same bit length.");
  for (int i = 0; i < nextBytes.length; i++) {
   resultBytes[i] = (byte) (resultBytes[i] * 37 ^ nextBytes[i]);
  }
 }
 return HashCode.fromBytesNoCopy(resultBytes);
}

代码示例来源：origin: google/j2objc

@Override
 public HashCode hash() {
  checkNotDone();
  done = true;
  return HashCode.fromBytesNoCopy(mac.doFinal());
 }
}

代码示例来源：origin: google/j2objc

/**
 * Creates a {@code HashCode} from a byte array. The array is defensively copied to preserve the
 * immutability contract of {@code HashCode}. The array cannot be empty.
 *
 * @since 15.0 (since 12.0 in HashCodes)
 */
public static HashCode fromBytes(byte[] bytes) {
 checkArgument(bytes.length >= 1, "A HashCode must contain at least 1 byte.");
 return fromBytesNoCopy(bytes.clone());
}

代码示例来源：origin: google/j2objc

@Override
 public HashCode hash() {
  checkNotDone();
  done = true;
  return (bytes == digest.getDigestLength())
    ? HashCode.fromBytesNoCopy(digest.digest())
    : HashCode.fromBytesNoCopy(Arrays.copyOf(digest.digest(), bytes));
 }
}

代码示例来源：origin: google/guava

/**
 * Creates a {@code HashCode} from a hexadecimal ({@code base 16}) encoded string. The string must
 * be at least 2 characters long, and contain only valid, lower-cased hexadecimal characters.
 *
 * <p>This method accepts the exact format generated by {@link #toString}. If you require more
 * lenient {@code base 16} decoding, please use {@link com.google.common.io.BaseEncoding#decode}
 * (and pass the result to {@link #fromBytes}).
 *
 * @since 15.0
 */
public static HashCode fromString(String string) {
 checkArgument(
   string.length() >= 2, "input string (%s) must have at least 2 characters", string);
 checkArgument(
   string.length() % 2 == 0,
   "input string (%s) must have an even number of characters",
   string);
 byte[] bytes = new byte[string.length() / 2];
 for (int i = 0; i < string.length(); i += 2) {
  int ch1 = decode(string.charAt(i)) << 4;
  int ch2 = decode(string.charAt(i + 1));
  bytes[i / 2] = (byte) (ch1 + ch2);
 }
 return fromBytesNoCopy(bytes);
}

代码示例来源：origin: google/guava

@Override
HashCode makeHash(Hasher[] hashers) {
 byte[] bytes = new byte[bits() / 8];
 int i = 0;
 for (Hasher hasher : hashers) {
  HashCode newHash = hasher.hash();
  i += newHash.writeBytesTo(bytes, i, newHash.bits() / 8);
 }
 return HashCode.fromBytesNoCopy(bytes);
}

代码示例来源：origin: wildfly/wildfly

/**
 * Creates a {@code HashCode} from a byte array. The array is defensively copied to preserve the
 * immutability contract of {@code HashCode}. The array cannot be empty.
 *
 * @since 15.0 (since 12.0 in HashCodes)
 */
public static HashCode fromBytes(byte[] bytes) {
 checkArgument(bytes.length >= 1, "A HashCode must contain at least 1 byte.");
 return fromBytesNoCopy(bytes.clone());
}

代码示例来源：origin: wildfly/wildfly

@Override
 public HashCode hash() {
  checkNotDone();
  done = true;
  return HashCode.fromBytesNoCopy(mac.doFinal());
 }
}

代码示例来源：origin: google/guava

@Override
 public HashCode hash() {
  return HashCode.fromBytesNoCopy(bytes());
 }
}

代码示例来源：origin: google/j2objc

@Override
HashCode makeHash(Hasher[] hashers) {
 byte[] bytes = new byte[bits() / 8];
 int i = 0;
 for (Hasher hasher : hashers) {
  HashCode newHash = hasher.hash();
  i += newHash.writeBytesTo(bytes, i, newHash.bits() / 8);
 }
 return HashCode.fromBytesNoCopy(bytes);
}

代码示例来源：origin: wildfly/wildfly

@Override
HashCode makeHash(Hasher[] hashers) {
 byte[] bytes = new byte[bits() / 8];
 int i = 0;
 for (Hasher hasher : hashers) {
  HashCode newHash = hasher.hash();
  i += newHash.writeBytesTo(bytes, i, newHash.bits() / 8);
 }
 return HashCode.fromBytesNoCopy(bytes);
}

代码示例来源：origin: google/guava

public void testPadToLongWith6Bytes() {
 assertEquals(0x0000999999999999L, HashCode.fromBytesNoCopy(byteArrayWith9s(6)).padToLong());
}

代码示例来源：origin: google/guava

public void testPadToLongWith8Bytes() {
 assertEquals(0x9999999999999999L, HashCode.fromBytesNoCopy(byteArrayWith9s(8)).padToLong());
}

代码示例来源：origin: google/guava

public void testPadToLongWith4Bytes() {
 assertEquals(0x0000000099999999L, HashCode.fromBytesNoCopy(byteArrayWith9s(4)).padToLong());
}

代码示例来源：origin: google/guava

public void testFromBytesNoCopy_noCopyOccurs() {
 byte[] bytes = new byte[] {(byte) 0xcd, (byte) 0xab, (byte) 0x00, (byte) 0x00};
 HashCode hashCode = HashCode.fromBytesNoCopy(bytes);
 assertEquals(0x0000abcd, hashCode.asInt());
 assertEquals("cdab0000", hashCode.toString());
 bytes[0] = (byte) 0x00;
 assertEquals(0x0000ab00, hashCode.asInt());
 assertEquals("00ab0000", hashCode.toString());
}