Fieldload

Op is idempotent if re-evaluation of the operation with the same arguments is going to produce the same results, without any extra side effects as long as previous evaluation did not throw.

Op is pure if it doesn't have any side-effects, including:

• doesn't throw exceptions * doesn't perform any unsafe reads or writes from the memory * doesn't call foreign code

Recomputing pure op will always yield to the same result.

Calculates a hash code value for the object.

The default hashing algorithm is platform dependent.

Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.