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NULL - Definiția din dicționar

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Null (?), a. [L. nullus not any, none; ne not + ullus any, a dim. of unus one; cf. F. nul. See No, and One, and cf. None.] 1. Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
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Faultily faultless, icily regular, splendidly null,
Dead perfection; no more. Tennyson.
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2. Having a value of zero; as, of null utility.
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3. (Math.) Empty; having no members; as, the null set.
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4. (Computers) Unassigned or meaningless; -- a special value given to variables, especially pointers or logical variables, indicating that it is meaningless and cannot be used in computation; as, an uninitialized pointer in "C" is given a null value. The actual value that is stored in memory to indicate the null condition may vary with the computer language used.
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Null, n. 1. Something that has no force or meaning.
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2. That which has no value; a cipher; zero. Bacon.
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Null method (Physics.), a zero method. See under Zero.
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Null, v. t. [From null, a., or perh. abbrev. from annul.] To annul. [Obs.] Milton.
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Null, n. [Etymol. uncertain.] One of the beads in nulled work.
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