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The memento pattern is a software design pattern that exposes the private internal state of an object. One example of how this can be used is to restore an object to its previous state (undo via rollback), another is versioning, another is custom serialization.
A class delegates state-specific behavior to its current state object instead of implementing state-specific behavior directly. This makes a class independent of how state-specific behavior is implemented. New states can be added by defining new state classes. A class can change its behavior at run-time by changing its current state object.
Memoization was explored as a parsing strategy in 1991 by Peter Norvig, who demonstrated that an algorithm similar to the use of dynamic programming and state-sets in Earley's algorithm (1970), and tables in the CYK algorithm of Cocke, Younger and Kasami, could be generated by introducing automatic memoization to a simple backtracking recursive ...
WASHINGTON (Reuters) -The Trump administration is empowering federal immigration officers to consider whether to strip temporary legal status from migrants who entered through former President Joe ...
PHOTO: Secretary of State Marco Rubio listens as President Donald Trump meets with India's Prime Minister Narendra Modi in the Oval Office of the White House, Feb. 13, 2025, in Washington.
The observer design pattern is a behavioural pattern listed among the 23 well-known "Gang of Four" design patterns that address recurring design challenges in order to design flexible and reusable object-oriented software, yielding objects that are easier to implement, change, test and reuse.
During the first month after Election Day in November, the S&P stock index rose a nifty 5.3%.Investors cheered incoming President Donald Trump, who promised fiscal stimulus in the form of tax cuts ...
Redux is an open-source JavaScript library for managing and centralizing application state. It is most commonly used with libraries such as React or Angular for building user interfaces. Similar to (and inspired by) Facebook's Flux architecture, it was created by Dan Abramov and Andrew Clark. Since mid-2016, the primary maintainers are Mark ...