Outline ● What is plugin architecture? ● Why use plugin architecture? ● Designing a simplified plugin architecture ● Library used in robotics to implement plugin based system ○ Pluginlib ● Case study study for plugin architecture - MoveIt ● Limitations ● Summary 2Introduction •Abi Sivaraman •Robotics Engineer at PickNik Robotics •I work with robotic arms •MoveIt Maintainer 3What is plugin plugin architecture? Software Design Pattern that allows for developers to add functionality to a larger system without having to alter the source code of the system itself. Plug-ins are self-contained

API server-side architecture for Beginners GopherCon ���� ����.��.�� - @hgsgtk © ����-���� BASE, Inc. � Talk abstract • A practical approach to build server-side architecture in a Go project � Problem of building architecture for beginners � Approach to build architecture � Summary � Talk structure © ����-���� BASE, Inc. � Problem of building architecture for beginners � Approach Approach to build architecture � Summary � Talk structure © ����-���� BASE, Inc. � Why I need server-side architecture �.Keep a design easy to change • -> Separate external input/output and business

Introduction (required): Title and brief overview of what the poster reports on. Title: Pipeline architectures in C++: overloaded pipe operator | std::expected and its monadic operations Brief programmers. One of its most characteristic patterns is composition of functions in the form of a pipeline pattern. Since C++20 we can use the ranges library with its characteristic function composition abilities thanks to the overloaded pipe operator. In this poster I show how to implement a custom pipeline framework that employs std::expected, available since C++23. An overloaded custom pipe operator

uptake in many different computing sectors. The book also contains many insights about computer architecture in general, as well as explaining the particular de- sign choices we made in creating RISC-V. the point, and complete. The book’s commentaries provide a gratuitous history, motivation, and architecture critique. —C. Gordon Bell, Microsoft and designer of the Digital PDP-11 and VAX-11 instruction handy little book effortlessly summarizes all the essential elements of the RISC-V Instruction Set Architecture, a perfect reference guide for students and practitioners alike. —Professor Randy Katz, University

embedded software • Started using C++ in 1995 • First cross-platform project in 1994Cross-Platform Architecture Goals • Take advantage of all platforms • Focus on the compiler • Minimize boilerplate and unnecessary requiring implementations that differ depending upon the target machine architecture. • Features may be hardware: CPU architecture, SIMD instruction set, DMA controller, GPIO module, etc. • Features

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 3.8 Item Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 6 Extending Scrapy 113 6.1 Architecture overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 for example) or the storage backend (FTP or Amazon S3, for example). You can also write an item pipeline to store the items in a database very easily. 2.1.5 Review scraped data If you check the scraped_data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 3.8 Item Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 6 Extending Scrapy 119 6.1 Architecture overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 for example) or the storage backend (FTP or Amazon S3, for example). You can also write an item pipeline to store the items in a database very easily. 2.1.5 Review scraped data If you check the scraped_data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 3.8 Item Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6 Extending Scrapy 115 6.1 Architecture overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 for example) or the storage backend (FTP or Amazon S3, for example). You can also write an item pipeline to store the items in a database very easily. 2.1.5 Review scraped data If you check the scraped_data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 3.7 Item Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 6 Extending Scrapy 117 6.1 Architecture overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 for example) or the storage backend (FTP or Amazon S3, for example). You can also write an item pipeline to store the items in a database very easily. 2.1.5 Review scraped data If you check the scraped_data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 3.7 Item Pipeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 6 Extending Scrapy 165 6.1 Architecture overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 for example) or the storage backend (FTP or Amazon S3, for example). You can also write an item pipeline to store the items in a database. 6 Chapter 2. First steps Scrapy Documentation, Release 1.2.3