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Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in U.S. Patent No. 2,950,048, granted on August 23, 1960.
As of 23 June 2024 (seven months after PHP 8.3's release), PHP is used as the server-side programming language on 76.2% of websites where the language could be determined; PHP 7 is the most used version of the language with 53.9% of websites using PHP being on that version, while 31.2% use PHP 8, 14.8% use PHP 5 and 0.2% use PHP 4.
Async/await. In computer programming, the async/await pattern is a syntactic feature of many programming languages that allows an asynchronous, non-blocking function to be structured in a way similar to an ordinary synchronous function. It is semantically related to the concept of a coroutine and is often implemented using similar techniques ...
Glyph Lefkowitz is an American open-source software programmer and creator of the Twisted network programming framework for Python. [2] [3] His work on asynchronous programming techniques influenced the core Python language, [4] [5] as well as the JavaScript Promises ecosystem, through Dojo and Mochikit . He is a frequent speaker at developer ...
The combination of type providers, queries and strongly typed functional programming is known as information rich programming. Agent programming. F# supports a variation of the actor programming model through the in-memory implementation of lightweight asynchronous agents. For example, the following code defines an agent and posts 2 messages:
Time-keeping on this clock uses arithmetic modulo 12. Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus.
In computer science, an algorithm is called non-blocking if failure or suspension of any thread cannot cause failure or suspension of another thread; [1] for some operations, these algorithms provide a useful alternative to traditional blocking implementations. A non-blocking algorithm is lock-free if there is guaranteed system-wide progress ...
Python 2.5 implements better support for coroutine-like functionality, based on extended generators ; Python 3.3 improves this ability, by supporting delegating to a subgenerator ; Python 3.4 introduces a comprehensive asynchronous I/O framework as standardized in PEP 3156, which includes coroutines that leverage subgenerator delegation