COMPOSABLE C++ COMPOSABLE C++ BEN DEANE / BEN DEANE / CPPCON 2021 CPPCON 2021 @ben_deane @ben_deaneIN THIS TALK IN THIS TALK 1. Composability de�ned 2. Composable types 3. Objects and patterns 4 Hierarchies and computationCOMPOSABLE? COMPOSABLE? What does "composable" mean? What does "composable" mean? Composable, reusable, extensible, �exible…? Composable, reusable, extensible, �exible…? Simple choosing. Often we don't even realise we're choosing.bool bool The simplest composable return type is The simplest composable return type is bool bool.. Simple, but important. Simple, but important.

可组合的 Vue Composable Vue, 编写可组合可复⽤的 Vue 函数的最佳实践与技巧 ANTHONY FU Hangzhou, China 2021 Anthony Fu antfu antfu7 Anthony Fu antfu.me Vue 核⼼成员 / Vite 团队成员 VueUse, Slidev, Type Challenges 等项⽬创作者 全职开源

aining_time, &minutes_left) != OVEN_OK) { return -1; } .... }Composable Functions Part 3:Composable Functions • Filter - take a list of items of one and eliminate items to create a the bread. It will then send those bananas to the Banana Processor 5000 for peeling and mashing.Composable Functions: Mashing bananas All Bananas Ripe Bananas Peeled Bananas filter(IsBanana) filter(IsRipe) return ingredient; }); return mashedBananas; }Composable Functions: Filter std::vector FilterEmployees(const std::vector employees

Release 1.2.dev0 click is a Python package for creating beautiful command line interfaces in a composable way with as little amount of code as necessary. It’s the “Command Line Interface Creation Kit” single command line utility for Python out there which ticks the following boxes: • is lazily composable without restrictions • fully follows the UNIX command line conventions • supports loading values environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same on Python 2 and 3 • supports file handling out of the box There are many alternatives

WORD ABOUT RANGES -- Everyone (justifying ranges) "STL algorithms are not composable." "STL algorithms are not composable." 4 . 1A WORD ABOUT RANGES A WORD ABOUT RANGES What, just because What, just exist? doesn't exist? -- Everyone (justifying ranges) "STL algorithms are not composable." "STL algorithms are not composable." 4 . 1STL ALGORITHMS: A STUDY IN STL ALGORITHMS: A STUDY IN COMPOSABILITY

Documentation, Release 2.6 Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as neces- sary. It’s the “Command Line Interface Creation Kit”. It’s highly single command line utility for Python out there which ticks the following boxes: • is lazily composable without restrictions • fully follows the Unix command line conventions • supports loading values environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports file handling out of the box • comes with useful

Whole-system reset • Resource prioritization and recovery • Resource metrics and runtime monitoring Composable!Charley Bay - charleyb123 at gmail dot com The Roles of Symmetry And Orthogonality In Design cppcon • Well-established resource transfer Symmetry Restored! Resource lifecycle is well-defined Composable!Charley Bay - charleyb123 at gmail dot com The Roles of Symmetry And Orthogonality In Design cppcon or subsystems Subsystem A Subsystem B Symmetry Restored! Resource lifecycle is well-defined Composable!Charley Bay - charleyb123 at gmail dot com The Roles of Symmetry And Orthogonality In Design cppcon

Documentation, Release 3.3 Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as neces- sary. It’s the “Command Line Interface Creation Kit”. It’s highly single command line utility for Python out there which ticks the following boxes: • is lazily composable without restrictions • fully follows the Unix command line conventions • supports loading values environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports file handling out of the box • comes with useful

Release 4.2.dev0 Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as neces- sary. It’s the “Command Line Interface Creation Kit”. It’s highly single command line utility for Python out there which ticks the following boxes: • is lazily composable without restrictions • fully follows the Unix command line conventions • supports loading values environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports file handling out of the box • comes with useful

Documentation, Release 6.7 Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as neces- sary. It’s the “Command Line Interface Creation Kit”. It’s highly single command line utility for Python out there which ticks the following boxes: • is lazily composable without restrictions • fully follows the Unix command line conventions • supports loading values environment variables out of the box • supports for prompting of custom values • is fully nestable and composable • works the same in Python 2 and 3 • supports file handling out of the box • comes with useful