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Memento. Note: not equals to English version!

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Евгений Глотов
2015-05-30 00:04:55 +03:00
parent 0ebafc5eaa
commit 5d11bc5a87
2 changed files with 49 additions and 19 deletions
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6
Behavioral/Memento/README.rst
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@@ -4,9 +4,9 @@
Purpose
-------
It provides the ability to restore an object to its previous state (undo
It provides the ability to restore an object to it's previous state (undo
via rollback) or to gain access to state of the object, without revealing
its implementation (ie, the object is not required to have a functional
it's implementation (i.e., the object is not required to have a functional
for return the current state).
The memento pattern is implemented with three objects: the Originator, a
@@ -14,7 +14,7 @@ Caretaker and a Memento.
Memento – an object that *contains a concrete unique snapshot of state* of
any object or resource: string, number, array, an instance of class and so on.
The uniqueness in this case not imply the prohibition existence of similar
The uniqueness in this case does not imply the prohibition existence of similar
states in different snapshots. That means the state can be extracted as
the independent clone. Any object stored in the Memento should be
*a full copy of the original object rather than a reference* to the original