Chapter 22. Bolt-ins
Bolt: A strong pin, of iron or other material, used to fasten or hold something in place, often having a head at one end and screw thread cut upon the other end.
The term bolt-in was originally coined, to the best of my knowledge, by my friends and former colleagues Leigh and Scott,[1] who have a software consultancy based in Sydney, Australia. Generally speaking, bolt-ins “bolt in” significant enhancing functionality around existing classes. This sounds similar to the concept of veneers, and indeed bolt-ins can be considered a closely related concept. However, they are a whole lot more substantive, and they have fewer constraints than veneers.
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