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  2. List of proofreader's marks - Wikipedia

    en.wikipedia.org/wiki/List_of_proofreader's_marks

    Used to indicate that an abbreviation should be spelled out, such as in its first use stet: Let it stand: Indicates that proofreading marks should be ignored and the copy unchanged tr: transpose: Transpose the two words selected wf: Wrong font: Put text in correct font ww [3] Wrong word: Wrong word used (e.g. to/too)

  3. Semaphore (programming) - Wikipedia

    en.wikipedia.org/wiki/Semaphore_(programming)

    In computer science, a semaphore is a variable or abstract data type used to control access to a common resource by multiple threads and avoid critical section problems in a concurrent system such as a multitasking operating system. Semaphores are a type of synchronization primitive. A trivial semaphore is a plain variable that is changed (for ...

  4. Synchronization (computer science) - Wikipedia

    en.wikipedia.org/wiki/Synchronization_(computer...

    Semaphores are signalling mechanisms which can allow one or more threads/processors to access a section. A Semaphore has a flag which has a certain fixed value associated with it and each time a thread wishes to access the section, it decrements the flag. Similarly, when the thread leaves the section, the flag is incremented.

  5. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.

  6. Dining philosophers problem - Wikipedia

    en.wikipedia.org/wiki/Dining_philosophers_problem

    Illustration of the dining philosophers problem. Each philosopher has a bowl of spaghetti and can reach two of the forks. In computer science, the dining philosophers problem is an example problem often used in concurrent algorithm design to illustrate synchronization issues and techniques for resolving them.

  7. Readers–writer lock - Wikipedia

    en.wikipedia.org/wiki/Readers–writer_lock

    A common use might be to control access to a data structure in memory that cannot be updated atomically and is invalid (and should not be read by another thread) until the update is complete. Readers–writer locks are usually constructed on top of mutexes and condition variables , or on top of semaphores .

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for Tuesday ...

    www.aol.com/today-nyt-strands-hints-spangram...

    In today's puzzle, there are eight theme words to find (including the spangram). Hint: The first one can be found in the top half of the board. Here are the first two letters for each word: BA. TO ...

  9. ALGOL 68 - Wikipedia

    en.wikipedia.org/wiki/ALGOL_68

    (INT sum := 0; FOR i TO n DO sum +:= f(i) OD; sum) Note that, being an integer expression, the former block of code can be used in any context where an integer value can be used . A block of code returns the value of the last expression it evaluated; this idea is present in Lisp , among other languages.