Abstract
Represent an operation to be performed on the elements of an object structure. Visitor lets you define a new operation without changing the classes of the elements on which it operates.1
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Design Patterns: Elements of Reusable Object-Oriented Software, p. 366
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© 2017 Kelt Dockins
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Dockins, K. (2017). Visitor. In: Design Patterns in PHP and Laravel. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-2451-9_26
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DOI: https://doi.org/10.1007/978-1-4842-2451-9_26
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Publisher Name: Apress, Berkeley, CA
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Online ISBN: 978-1-4842-2451-9
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