## Custom Views for the Rest of Us ## JACOB RICE 20 21 October 24-29 ## Custom Views for the Rest of Us Jacob Rice jacob.rice.cpp@gmail.com KEYSIGHT TECHNOLOGIES 1 using namespace std::views; 2 y> ## → ## → ## → ## What is a view? ## Easy to access: namespace std { 3 } namespace views = ranges::views; ## Range • Semantically: a collection of "things". • Has begin and end functions iterated. Pipelines are cheap to create; “real” work is done during iteration. 1 using namespace std::views; 2 for (int i : iota(2) | filter(even) | transform(square)) 3 std::cout << i <<

## +23 ## Distributed Ranges: A Model for Building Distributed Data Structures, Algorithms, and Views ## BENJAMIN BROCK ## Notices and Disclaimers For notices, disclaimers, and details about performance Other names and brands may be claimed as the property of others. ## Human Readable Disclaimer - The views in this talk are mine, not necessarily those of my employer. - This is a speculative, academic-style dot_product(vector& x, vector& y) { auto z = views::zip(x, y) | views::transform([](auto element) { auto [a, b] = element; return a * b;

databases 3.3 Handling HTTP requests 3.4 Working with forms 221 3.5 Templates 267 3.6 Class-based views 279 3.7 Migrations 304 3.8 Managing files 315 3.9 Testing in Django 318 3.10 User authentication REMOTE_USER 537 4.2 Writing custom Django-admin commands 539 4.3 Writing custom model fields 544 4.4 Custom Lookups 555 4.5 Custom template tags and filters 559 4.6 Writing a custom storage system 576 API Reference 629 6.1 Applications 629 6.2 System check framework 635 6.3 Built-in class-based views API 646 6.4 Clickjacking Protection 694 6.5 contrib packages 696 6.6 Cross Site Request Forgery

admin interface: it’s not just scaffolding – it’s the whole house ■ Design your URLs ■ Write your views ■ Design your templates ■ This is just the surface • Quick install guide ■ Install Python Introducing the Django Admin • Writing your first Django app, part 3 Overview Writing more views Write views that actually do something ■ Raising a 404 error ■ Use the template system ■ Removing hardcoded Namespacing URL names • Writing your first Django app, part 4 Write a minimal form ■ Use generic views: Less code is better • Writing your first Django app, part 5 ■ Introducing automated testing ■

section shows how to list selected sprites but unfortunately that's in grayscale whereas this custom listing is in color.) • Study the in-depth Hitchhiker's Guide to PlantUML, eg sections Standard "cd")==3 : "This always fails" Assertion error : This always fails ### 25.17 Building custom library [!import, !include] It’s possible to package a set of included files into a single .zip 25.15 Memory dump [!memory_dump] ..... 369 25.16 Assertion [!assert] ..... 370 25.17 Building custom library [!import, !include] ..... 370 25.18 Search path ..... 371 25.19 Argument concatenation

[Image](/uploads/documents/a/f/0/b/af0ba3339ba8eb2fcdf2647d94c085d4/p9_9.jpg) ## Operator Pattern - Custom Resource & Controller apiVersion: pingcap.com/v1alpha1 kind: TidbCluster spec: version: Kubernetes 的几种方式 ## Common ways to extend Kubernetes - Custom Resource - TidbCluster - Tidb Initializer - TidbMonitor - Backup/Restore - Custom Controller - Scheduler Extender (optional) - Admission Admission Webhook (optional) - ...Scheduler framework, Aggregated APIServer ## Custom Resource apiVersion: pingcap.com/v1alpha1 kind: TidbCluster spec: version: v4.0.3 pd: baseImage: pingcap/pd

building block provided by Flask-RESTful are resources. Resources are built on top of Flask pluggable views, giving you easy access to multiple HTTP methods just by defining methods on your resource. A basic 201 class Todo3(Resource): def get(self): # Set the response code to 201 and return custom headers return {'task': 'Hello world'}, 201, {'Etag': 'some-opaque-string'} the argparse module, reqparse.RequestParser.parse_args() returns a Python dictionary instead of a custom data structure. Using the reqparse module also gives you sane error messages for free. If an argument

the user leveraging the status block of the Custom Resource Configuration of the workload • Operator provides configuration via the spec section of the Custom Resource - Operator reconciles configuration performance metrics about the Operand Alerting and Events • Operand sends useful alerts - Custom Resources emit custom events ## Auto-scaling - Operator scales the Operand up under increased load based on ents/e/9/2/8/e9285922cb84ea7e2cf1f473a4f03572/p16_1.jpg) custom controller operator pattern built-in resources custom resources custom resource ## Kubebuilder 框架模型 ![Image](/uploads/documents/e

[Image](/uploads/documents/9/3/9/8/9398714df43beb793f9dce171fbfd241/p1_6.jpg) 3 C++20 Views C++ ©2024 by josuttis.com C++20: Views template void print(const T& coll) { for (const auto& @2024 by josuttis.com 4 Output: 0 8 15 47 11 42 1 0 1 8 11 15 42 47 C++20: Views void print(const auto& coll) { for (const auto& elem : coll) { std::cout << elem << 11 42 1 0 1 8 11 15 42 47 C++ @2024 by josuttis.com 5 josuttis|eckstein IT communication C++20: Views void print(const std::ranges::input_range auto& coll) { for (const auto& elem : coll)