adds a node, setting this
adds a node, setting this.dirty to true as a side effect
removes a tree, setting this
removes a tree, setting this.dirty to true as a side effect
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.
forces writing of contents to the file, even if there has not been any update
forces writing of contents to the file, even if there has not been any update.
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.
This method should log the message given as argument somewhere as a side-effect
This method should log the message given as argument somewhere as a side-effect.
...
returns an iterator over the nodes in this storage
returns an iterator over the nodes in this storage
run method of the thread
run method of the thread. remember to use start() to start a thread, not run.
Returns a string representation of the object
Returns a string representation of the object.
The default representation is platform dependent.
A persistent store with set semantics. This class allows to add and remove trees, but never contains two structurally equal trees.