This method is used to compare the receiver object (this
)
with the argument object (arg0
) for equivalence
This method is used to compare the receiver object (this
)
with the argument object (arg0
) for equivalence.
The default implementations of this method is an equivalence relation:
x
of type Any
,
x.equals(x)
should return true
.x
and y
of type
Any
, x.equals(y)
should return true
if and only
if y.equals(x)
returns true
.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)
).
the object to compare against this object for equality.
true
if the receiver object is equivalent to the argument; false
otherwise.
Deconstruction of the Either
type (in contrast to pattern matching)
Deconstruction of the Either
type (in contrast to pattern matching).
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.
Returns true
if this is a Left
, false
otherwise
Returns true
if this is a Left
, false
otherwise.
Returns true
if this is a Right
, false
otherwise
Returns true
if this is a Right
, false
otherwise.
Joins an Either
through Left
Joins an Either
through Left
.
Joins an Either
through Right
Joins an Either
through Right
.
Projects this Either
as a Left
Projects this Either
as a Left
.
Projects this Either
as a Right
Projects this Either
as a Right
.
If this is a Left
, then return the left value in Right
or vice versa
If this is a Left
, then return the left value in Right
or vice versa.
Returns a string representation of the object
Returns a string representation of the object.
The default representation is platform dependent.
The
Either
type represents a value of one of two possible types (a disjoint union). The data constructorsLeft
andRight
represent the two possible values. TheEither
type is often used as an alternative toscala.Option
whereLeft
represents failure (by convention) andRight
is akin toSome
.