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Samiam95124 (talk | contribs) →Union types: Pascal uses the term record, not union. If the author is referring to the C type union, that is properly termed a variant record in Pascal. |
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For these examples, which involve sets over small domains, the improved performance is usually achieved by the compiler representing set variables as [[bit vector]]s. The set [[Operator (programming)|operators]] can then be implemented efficiently as bitwise machine code operations.
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{{excerpt|Union type|Pascal}}
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