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Decorator UML class diagram. The decorator pattern can be used to extend (decorate) the functionality of a certain object statically, or in some cases at run-time, independently of other instances of the same class, provided some groundwork is done at design time.
Instead of an email address being found by looking up its user's key in the userpk column, the user record contains a pointer that directly refers to the email address record. That is, having selected a user, the pointer can be followed directly to the email records, there is no need to search the email table to find the matching records.
AngularDart works on Dart, which is an object-oriented, class defined, single inheritance programming language using C style syntax, that is different from Angular JS (which uses JavaScript) and Angular 2/ Angular 4 (which uses TypeScript). Angular 4 released in March 2017, with the framework's version aligned with the version number of the ...
Key-value stores: Key-value stores store data as pairs of keys and values. They are simple and efficient for certain types of operations, like caching. Examples: Redis, DynamoDB. Column-family stores: Column-family stores organize data into columns instead of rows, making them suitable for large-scale distributed systems and
Text file with portion of The Human Side of Animals by Royal Dixon, displayed by the command cat in an xterm window. In computing, plain text is a loose term for data (e.g. file contents) that represent only characters of readable material but not its graphical representation nor other objects (floating-point numbers, images, etc.).
Adaptive arrays can be a single antenna with active elements or an array of similar antennas with ability to change their combined radiation pattern as different conditions persist. Active electronically scanned arrays ( AESAs ) manipulate phase shifters and attenuators at the face of each radiating site to provide a near instantaneous scan ...
Double Q-learning [23] is an off-policy reinforcement learning algorithm, where a different policy is used for value evaluation than what is used to select the next action. In practice, two separate value functions and are trained in a mutually symmetric fashion using separate experiences. The double Q-learning update step is then as follows:
In the asymptotic setting, a family of deterministic polynomial time computable functions : {,} {,} for some polynomial p, is a pseudorandom number generator (PRNG, or PRG in some references), if it stretches the length of its input (() > for any k), and if its output is computationally indistinguishable from true randomness, i.e. for any probabilistic polynomial time algorithm A, which ...