A method that should be called from every well-designed equals method that is open to be overridden in a subclass
A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.
The equality method defined in AnyRef
The equality method defined in AnyRef
.
Returns a hash code value for the object
Returns 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.
return k for a product A(x_1,
return k for a product A(x_1,...,x_k)
for a product A(x_1,
for a product A(x_1,...,x_k)
, returns x_(n+1)
for 0 <= n < k
An iterator that returns all fields of this product
By default the empty string
By default the empty string. Implementations may override this method in order to prepend a string prefix to the result of the toString methods.
Returns a string representation of the object
Returns a string representation of the object.
The default representation is platform dependent.
A class of error tokens. Error tokens are used to communicate errors detected during lexical analysis