Appendix C
Language Definitions
“Language is a tool adequate to provide any degree of precision relevant to a particular situation.”
—Kenneth L. Pike
This appendix is intended as a reference for definitions relevant to this book.
C.1 Value Categories
C++ distinguishes between different categories of values. We focus here on lvalues and rvalues and have adapted the definitions from the ISO standard [38] accordingly.
Definition C–1. (lvalue). An lvalue is an object, bit-field, function.
More pragmatically, an lvalue is or refers to an entity that has a name which allows us to determine its address with the address operator &. This rule is more generally applicable than we might think. Even a function whose code is substituted for each call of ...
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