Vertical-bar meaning

(mathematics) Norms (e.g.)
noun
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(mathematics) Divisibility (e.g.)
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(mathematics) Set definitions (e.g.)
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(mathematics) Conditional probability (e.g.)
noun
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(computing) A symbol which, in Unix, is used as a pipe.
noun
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(computing) A symbol which, in regular expressions, indicates an alternation.
noun
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The vertical bar character (|), located over the backslash (\) key, is used as an OR operator. In the C/C++ language, two vertical bars are used; for example, if (x == 'a' || x == 'b') means "if X is equal to A or B." It is also used as a pipe symbol, which directs the output of one process to another. See filters and pipes.
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(computing) The ASCII character at the decimal position of 124, depicted as | or ¦;
noun
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(mathematics) Represents an absolute value (e.g. )
noun
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