C++20: An (Almost) Complete Overview September 15th 2020 Marc Grégoire Software Architect marc.gregoire@nikon.com2 Marc Grégoire  Belgium  Software architect for Nikon Metrology  Microsoft

which returns new sender. when_all(senders...) → sender … completes when all the input senders complete. on(scheduler, sender) → sender … starts the input sender in the context of the input scheduler pool picks up the work and executes it Inner-most receiver is notified that the work is complete35 OPERATIONS EXECUTE OUTSIDE-IN when_all then schedule Every adaptor has a chance to run auto compute = [=](int i) -> unifex::task { co_await ex::schedule(sched) | unifex::complete_inline(); co_return compute_intensive(i); }; ex::sender auto work = ex::when_all(compute(0)

connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( hello('ws://localhost:8765')) And here’s an echo server: #!/usr/bin/env python import asyncio async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost', 8765)) asyncio.get_event_loop().run_forever() Do you like {greeting}") start_server = websockets.serve(hello, 'localhost', 8765) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_forever() On the server side, websockets executes the

connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( hello('ws://localhost:8765')) And here’s an echo server: #!/usr/bin/env python import asyncio async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost', 8765)) asyncio.get_event_loop().run_forever() Do you like {greeting}") start_server = websockets.serve(hello, 'localhost', 8765) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_forever() On the server side, websockets executes the

(blocking) requests when the future request option is not speci- fied. This means that the request will complete immediately, and if an error is encountered, a GuzzleHttp\Exception\RequestException will be thrown event listeners to add to each request’s before event. • complete: Callable or array representing the event listeners to add to each request’s complete event. • error: Callable or array representing the event Callable or array representing the event listeners to add to each request’s end event. The “before”, “complete”, “error”, and “end” event options accept a callable or an array of associative arrays where each

(blocking) requests when the future request option is not specified. This means that the request will complete immediately, and if an error is encountered, a GuzzleHttp\Exception\RequestException will be thrown event listeners to add to each request’s before event. complete: Callable or array representing the event listeners to add to each request’s complete event. error: Callable or array representing the event Callable or array representing the event listeners to add to each request’s end event. The “before”, “complete”, “error”, and “end” event options accept a callable or an array of associative arrays where each

connect(uri) as websocket: await websocket.send("Hello world!") asyncio.get_event_loop().run_until_complete( hello('ws://localhost:8765')) And here’s an echo server: #!/usr/bin/env python import asyncio async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost', 8765)) asyncio.get_event_loop().run_forever() Do you like format(greeting)) start_server = websockets.serve(hello, 'localhost', 8765) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_forever() On the server side, the handler coroutine

await websocket.send("Hello world!") await websocket.recv() asyncio.get_event_loop().run_until_complete(hello()) And here’s an echo server: #!/usr/bin/env python import asyncio import websockets async send(message) start_server = websockets.serve(echo, "localhost", 8765) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_forever() Do you like it? Let’s dive in! CONTENTS 1 page) start_server = websockets.serve(hello, "localhost", 8765) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_forever() On the server side, websockets executes the

definition, like any other commands, PlantUML Language Reference Guide (1.2023.11) 55 / 550 2.14 Complete example 2 USE CASE DIAGRAM • In an included file, • In a configuration file, provided in the command application) as (Use) << Main >> User -> (Start) User --> (Use) MySql --> (Use) @enduml 2.14 Complete example @startuml left to right direction skinparam packageStyle rectangle actor customer actor roundBox skinparam activityShape octagon (*) --> "First Action" "First Action" --> (*) @enduml 5.12 Complete example @startuml title Servlet Container (*) --> "ClickServlet.handleRequest()" --> "new Page"

installed, you can simply hit ctrl-space in the POM editor and type “spring-boot-starter” for a complete list. Third party starters should not start with spring-boot-starter as it is reserved for official the box. JVM hot swapping is somewhat limited with the bytecode that it can replace, for a more complete solution JRebel or the Spring Loaded project can be used. The spring-boot-devtools module also includes spring-boot-devtools module will automatically apply sensible development-time configuration. Tip For a complete list of the properties that are applied see DevToolsPropertyDefaultsPostProcessor. Automatic restart