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C++ Templates: The Complete Guide, 2nd Edition by Douglas Gregor, Nicolai M. Josuttis, David Vandevoorde

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Chapter 28

Debugging Templates

Templates raise two classes of challenges when it comes to debugging them. One set of challenges is definitely a problem for writers of templates: How can we ensure that the templates we write will function for any template arguments that satisfy the conditions we document? The other class of problems is almost exactly the opposite: How can a user of a template find out which of the template parameter requirements it violated when the template does not behave as documented?

Before we discuss these issues in depth, it is useful to contemplate the kinds of constraints that may be imposed on template parameters. In this chapter, we deal mostly with the constraints that lead to compilation errors when violated, and ...

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