HashCode (cactoos 0.55.0 API)

java.lang.Object
- org.cactoos.scalar.HashCode

All Implemented Interfaces:

Scalar<Integer>
```
public final class HashCode
extends Object
implements Scalar<Integer>
```
Object HashCode. Replace this code: public int hashCode() { int hash = 5; hash = 67 * hash + Objects.hashCode(this.attr1); hash = 67 * hash + Objects.hashCode(this.attr2); hash = 67 * hash + Objects.hashCode(this.attr3); // ... more attributes return hash; } With this: public int hashCode() { return new HashCode( 5, 67, this.attr1, this.attr2, this.attr3, ... ).value(); }
There is no thread-safety guarantee.

Since:

1.0

Constructor Summary

Constructors
Constructor	Description
`HashCode(int initial, int multiplier, Iterable<?> attributes)`	Ctor.
`HashCode(int initial, int multiplier, Object... attributes)`	Ctor.
`HashCode(Iterable<?> attributes)`	Ctor.
`HashCode(Object... attributes)`	Ctor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

Integer value()
Convert it to the value.
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - HashCode
```
public HashCode(Object... attributes)
```
    Ctor.
    The initial and multiplier values are arbitrarily set to 17 and 31 respectively.
    
    Parameters:
    
    attributes - The object's attributes
  - HashCode
```
public HashCode(Iterable<?> attributes)
```
    Ctor.
    The initial and multiplier values are arbitrarily set to 17 and 31 respectively.
    
    Parameters:
    
    attributes - The object's attributes
  - HashCode
```
public HashCode(int initial,
                int multiplier,
                Object... attributes)
```
    Ctor.
    
    Parameters:
    
    initial - Initial value (non-zero recommended)
    
    multiplier - Step multiplier (odd prime recommended)
    
    attributes - The object's attributes
  - HashCode
```
public HashCode(int initial,
                int multiplier,
                Iterable<?> attributes)
```
    Ctor.
    
    Parameters:
    
    initial - Initial value (non-zero recommended)
    
    multiplier - Step multiplier (odd prime recommended)
    
    attributes - The object's attributes
- Method Detail
  - value
```
public Integer value()
```
    Description copied from interface: Scalar
    
    Convert it to the value.
    
    Specified by:
    
    value in interface Scalar<Integer>
    
    Returns:
    
    The value