February 2001
Intermediate to advanced
352 pages
11h 30m
English
Content preview from Modern C++ Design: Generic Programming and Design Patterns AppliedBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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11. Multimethods
This chapter defines, discusses, and implements multimethods in the context of C++.
The C++ virtual function mechanism allows dispatching of a call depending on the dynamic type of one object. The multimethods feature allows dispatching of a function call depending on the types of multiple objects. A universally good implementation requires language support, which is the route that languages such as CLOS, ML, Haskell, and Dylan have taken. C++ lacks such support, so its emulation is left to library writers.
This chapter discusses some typical solutions and some generic implementations of each. The solutions feature various trade-offs in speed, flexibility, and dependency management. To describe the technique of dispatching a ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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