Class Layout Copyright © 2020 by Stephen C. Dewhurst and Daniel Saks 1 Class Layout Steve Dewhurst Semantics Consulting, Inc. www.stevedewhurst.com 1 Copyright © 2020 by Stephen C. Dewhurst and Daniel Daniel Saks C++ Classes  Only non-static data declarations in a class definition add anything to the size of class objects. class HR { public: ~~~ void terminator(Salary *, Hourly *, Temp *); private: Stephen C. Dewhurst and Daniel Saks 1 7Class Layout Copyright © 2020 by Stephen C. Dewhurst and Daniel Saks 2 sizeof(Class Object)  sizeof applied to the HR class yields the same result as sizeof applied

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 8.10 Queue —A synchronized queue class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 8.11 weakref —弱引用 . . . . . . . . . . . . . . 196 8.12 UserDict —Class wrapper for dictionary objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 8.13 UserList —Class wrapper for list objects . . . . . . . . . . . . . . . . . . . 201 8.14 UserString —Class wrapper for string objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 8.15 types —Names for built-in types . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 8.10 Queue —A synchronized queue class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 8.11 weakref —弱引用 . . . . . . . . . . . . . . 196 8.12 UserDict —Class wrapper for dictionary objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 8.13 UserList —Class wrapper for list objects . . . . . . . . . . . . . . . . . . . 201 8.14 UserString —Class wrapper for string objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 8.15 types —Names for built-in types . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 8.10 Queue —A synchronized queue class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 8.11 weakref —弱引用 . . . . . . . . . . . . . . 196 8.12 UserDict —Class wrapper for dictionary objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 8.13 UserList —Class wrapper for list objects . . . . . . . . . . . . . . . . . . . 201 8.14 UserString —Class wrapper for string objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202 8.15 types —Names for built-in types . . . . . . . . . . . . .

10Metafunctions 11Metafunctions • A metafunction is not a function but a class/struct 11Metafunctions • A metafunction is not a function but a class/struct • Metafunctions are not part of the language and have have no formal language support 11Metafunctions • A metafunction is not a function but a class/struct • Metafunctions are not part of the language and have no formal language support • They exist as idiomatic use of existing language features 11Metafunctions • A metafunction is not a function but a class/struct • Metafunctions are not part of the language and have no formal language support • They

W alter E. Brown. All rights reserved. The beginning of wisdom is to call things by their right names. — Confucius (paraphrase) The power of the name is the most elementary of all. — David Eddings 2008 5 The topic is names, but … • We won’t today discuss choosing names — others have already done that during past conferences. • Rather, we’ll talk about processing names … • As handled by our Walter E. Brown. All rights reserved. 2 Caveats about the “scope” of this talk • The topic of C++ names is so intricate that no single one-hour talk would be enough to cover it in full. • To make maGers

anything you like. However, multiple packages may create script files, so be sure to use descriptive names that are not used by other packages. One popular option is to give the script a name in the form installed will likely determine the outcome, which may be undesirable. If the two packages have different names, or if you're building variants of packages and need to line up other software in the stack, we recommend available to install, in your terminal window, run: conda search python This lists all packages whose names contain the text python. To list only the packages whose full name is exactly python, add the --full-name

anything you like. However, multiple packages may create script files, so be sure to use descriptive names that are not used by other packages. One popular option is to give the script a name in the form installed will likely determine the outcome, which may be undesirable. If the two packages have different names, or if you're building variants of packages and need to line up other software in the stack, we recommend available to install, in your terminal window, run: conda search python This lists all packages whose names contain the text python. To list only the packages whose full name is exactly python, add the --full-name

anything you like. However, multiple packages may create script files, so be sure to use descriptive names that are not used by other packages. One popular option is to give the script a name in the form installed will likely determine the outcome, which may be undesirable. If the two packages have different names, or if you're building variants of packages and need to line up other software in the stack, we recommend available to install, in your terminal window, run: conda search python This lists all packages whose names contain the text python. To list only the packages whose full name is exactly python, add the --full-name

the introduction of the .conda file format. Note: In conda 4.7 and later, you cannot use package names that end in “.conda” as they conflict with the .conda file format for packages. Using packages • metapackages function as a tool to help achieve mutual exclusivity among packages with different names. Let's look at some examples for how to use mutex metapackages to build NumPy against different BLAS chosen. Neither MKL nor its dependencies are mutually exclusive (meaning they do not have similar names and different version/build-string). This pathway may lead to some ambiguity and solutions with mixed