Classes inheriting trait Show can test their member methods
using the notattion meth(arg1, ..., argn),
where meth is the name of the method and
arg1,...,argn are the arguments.
The only difference to a normal method call is the leading quote
character ('). A quoted method call like the one above will produces a
legible diagnostic to be printed on Console. It is of the form
meth(arg1, ..., argn) gives <result>
where <result> is the result of evaluating the call.
It is reflexive: for any instance x of type Any,
x.equals(x) should return true.
It is symmetric: for any instances x and y of type
Any, x.equals(y) should return true if and only
if y.equals(x) returns true.
It is transitive: for any instances
x, y, and z of type AnyRef
if x.equals(y) returns true and
y.equals(z) returns
true, then x.equals(z) should return true.
If you override this method, you should verify that
your implementation remains an equivalence relation.
Additionally, when overriding this method it is often necessary to
override hashCode to ensure that objects that are
"equal" (o1.equals(o2) returns true)
hash to the same Int
(o1.hashCode.equals(o2.hashCode)).
arg0
the object to compare against this object for equality.
returns
true if the receiver object is equivalent to the argument; false otherwise.
definition classes: AnyRef ⇐ Any
defhashCode(): Int
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.
Classes inheriting trait
Show
can test their member methods using the notattionmeth(arg1, ..., argn)
, wheremeth
is the name of the method andarg1,...,argn
are the arguments. The only difference to a normal method call is the leading quote character ('). A quoted method call like the one above will produces a legible diagnostic to be printed onConsole
. It is of the formwhere
<result>
is the result of evaluating the call.