PragProg Customers

Kotlin Coroutine Confidence: error handling suggestion (page 43) (Solved)

dhmitchell

dhmitchell

Kotlin Coroutine Confidence: error handling suggestion (page 43) (Solved)

Possibly too pedantic, but I’d be tempted to remind the reader that they can certainly put the try/catch inside the launch and it will work. Less obv, they can put it just outside the coroutineScope and it will also work, but it will cancel the sibling jobs if they’re still running.

3 comments
/book-kotlin-coroutine-confidence
0 20 3

Marked As Solved

sam-cooper

sam-cooper

Author of Kotlin Coroutine Confidence

Thanks—found it. I reread this section and found quite a few opportunities to make it better. I’m going to include both your suggestions. I also found some repetitive bits to cut out, and I think the changes improve the way the whole section flows with the rest of the chapter. It should be a lot better in the next Beta release—thank you for drawing my attention to it!

Post #4

Popular Prag Prog topics Top

jdufour
PragProg Customers

The Cucumber for Java Book:
Hello! On page xix of the preface, it says there is a community forum "… for help if your’re stuck on one of the exercises in this book… ...
#question/book-the-cucumber-for-java-book
3 1139 1
New
herminiotorres
PragProg Customers

Concurrent Data Processing in Elixir: various errata
Hi @Margaret , On page VII the book tells us the example and snippets will be all using Elixir version 1.11 But on page 3 almost the en...
#errata/book-concurrent-data-processing-in-elixir
15 1542 13
New
Chrichton
PragProg Customers

Programming Phoenix LiveView: B03 (page 56-57) auth exercise
Dear Sophie. I tried to do the “Authorization” exercise and have two questions: When trying to plug in an email-service, I found the ...
#question/book-programming-phoenix-liveview
1 1179 3
New
adamwoolhether
PragProg Customers

Distributed Services with Go: receiving Unknown flag: --go_opt when compiling protobuf (page 20)
When trying to generate the protobuf .go file, I receive this error: Unknown flag: --go_opt libprotoc 3.12.3 MacOS 11.3.1 Googling ...
/book-distributed-services-with-go
0 4854 3
New
jskubick
PragProg Customers

Kotlin and Android Development featuring Jetpack: $kotlin_version ? (page 8)
I’m running Android Studio “Arctic Fox” 2020.3.1 Patch 2, and I’m embarrassed to admit that I only made it to page 8 before running into ...
#errata/book-kotlin-and-android-development-featuring-jetpack
0 1695 3
New
nicoatridge
PragProg Customers

Kotlin and Android Development: Could not get unknown property ‘kotlin_version’…
Hi, I have just acquired Michael Fazio’s “Kotlin and Android Development” to learn about game programming for Android. I have a game in p...
/book-kotlin-and-android-development-featuring-jetpack
0 7955 6
New
digitalbias
PragProg Customers

Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana
Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64) If you follow the defau...
#errata/book-build-a-weather-station-with-elixir-and-nerves
0 1931 4
New
Charles
PragProg Customers

Programming Phoenix LiveView: book not updated to version 1.6 (p. 18)
In general, the book isn’t yet updated for Phoenix version 1.6. On page 18 of the book, the authors indicate that an auto generated of ro...
#errata/book-programming-phoenix-liveview
9 2047 12
New
rainforest
PragProg Customers

Real-Time Phoenix: use PubSub with implementation of Phoenix.Socket.Transport rather than channels (page 37)
Hi, I’ve got a question about the implementation of PubSub when using a Phoenix.Socket.Transport behaviour rather than channels. Before ...
#question/book-real-time-phoenix#websockets#phoenixsocket#pubsub
0 1492 3
New
tkhobbes
PragProg Customers

Modern Front-End Development for Rails - application does not start after run bin/setup (page xviii)
After some hassle, I was able to finally run bin/setup, now I have started the rails server but I get this error message right when I vis...
#errata/book-modern-front-end-development-for-rails
0 1460 5
New

Other popular topics Top

DevotionGeo
Backend Developer Forum>Chat/Discussions

What is the reason behind Rust’s web framework, Rocket, not performing as well as expected in the Techempower benchmarks?
I know that these benchmarks might not be the exact picture of real-world scenario, but still I expect a Rust web framework performing a ...
/rust#web-frameworks
36 6244 11
New
DevotionGeo
Backend Developer Forum>Chat/Discussions

Would you use Erlang now when there is Elixir?
Why, if your answer is yes?
/elixir/erlang
167 4206 52
New
AstonJ
Hardware

Poll: Which keyboard layout do you use?
poll poll Be sure to check out @Dusty’s article posted here: An Introduction to Alternative Keyboard Layouts It’s one of the best write-...
colemakmods.github.io
#polls/keyboards
10 5127 11
New
AstonJ
General Dev Chat

What are the 'coolest' languages and tech right now?
Inspired by this post from @Carter, which languages, frameworks or other tech or tools do you think is killing it right now? :upside_down...
#community#adoption#cool-tech/elixir/erlang/rust/typescript/phoenix#otp/svelte/wasm/agda
160 3651 49
New
AstonJ
General Dev Chat

How fast do you type? Check your WPM here!
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
typing-speed-test.aoeu.eu
/keyboards
82 6665 31
New
AstonJ
Backend Developer Forum>Chat/Discussions

How to install Ruby 3 with ASDF
In case anyone else is wondering why Ruby 3 doesn’t show when you do asdf list-all ruby :man_facepalming: do this first: asdf plugin-upd...
/ruby#asdf
11 5140 4
New
Maartz
General Dev Chat

Roc Language - a new purely functional programming language built for speed and ergonomics
Hi folks, I don’t know if I saw this here but, here’s a new programming language, called Roc Reminds me a bit of Elm and thus Haskell. ...
#programminguages#functional-programming
49 4198 14
New
PragmaticBookshelf
In The Spotlight

Spotlight: Sophie DeBenedetto (Author) Interview and AMA!
Author Spotlight: Sophie DeBenedetto @SophieDeBenedetto The days of the traditional request-response web application are long gone, b...
/elixir/phoenix#liveview/book-programming-phoenix-liveview
37 3015 14
New
First poster: bot
In The News

Zig now has built-in HTTP server and client in std
zig/http.zig at 7cf2cbb33ef34c1d211135f56d30fe23b6cacd42 · ziglang/zig. General-purpose programming language and toolchain for maintaini...
github.com
/zig#http
0 2495 0
New
AstonJ
Backend Developer Forum>Questions/Help

Psql: error: connection to server on socket "/tmp/.s.PGSQL.5432" failed: No such file or directory
If you’re getting errors like this: psql: error: connection to server on socket “/tmp/.s.PGSQL.5432” failed: No such file or directory ...
/rails#macos/postgresql
1 1486 1
New
Back to top

Latest in PragProg

Programming Phoenix LiveView: Typo (page 103)
PragProg Customers
Programming Phoenix LiveView: Wrong HTML comment tag in example (page 102)
PragProg Customers
Programming Phoenix LiveView: typo missing word (page 101)
PragProg Customers
Agile Web Development with Rails 8 B7.0: order_mailer_test failing (page 196)
PragProg Customers
Simplicity: Let’s Change Our World — Again
PragProg Customers
Simplicity: "detail"→"derail" (page 74, B2.0)
PragProg Customers
Agile Web Development with Rails 8: Page 9
PragProg Customers
Kotlin Coroutine Confidence: Code does not run (pg 225)
PragProg Customers
Agile Web Development with Rails 8 B7.0: partials folder (page 151)
PragProg Customers
Kotlin Coroutine Confidence: Change function name, maybe (pg 182)
PragProg Customers
Modern Front-End Development for Rails, Second Edition: can't get code to run
PragProg Customers
Kotlin Coroutine Confidence: Book & source code do not match (pg 180)
PragProg Customers
Kotlin Coroutine Confidence: Add formatter off/on comments (pg 162)
PragProg Customers
Kotlin Coroutine Confidence: What's the IntelliJ IDEA inspection? (pg 133 & 141)
PragProg Customers
Kotlin Coroutine Confidence: Add `parallel/v9` (pg 125)
PragProg Customers
Agile Web Development with Rails 8_B7.0 (pages 93/94)
PragProg Customers
Agile Web Development with Rails 8_B7.0 (page 93)
PragProg Customers
Agile Web Development with Rails 8_B7.0 (page 90)
PragProg Customers
Programming Phoenix LiveView: Awkward sentence/missing word (page 67)
PragProg Customers
Kotlin Coroutine Confidence: Add location indicators to output (pg 80)
PragProg Customers

View all threads ❯

Latest (all)

Node.js v24.0.0 released!
Backend News (official)
Preact 10.26.6 released!
Frontend News (official)
Kotlin: Compose Multiplatform 1.8.0 Released: Compose Multiplatform for iOS Is Stable and Production-Ready
Backend News (official)
PostgreSQL: external_file v1.2 has been released
Backend News (official)
Can Supercapacitors Save the Grid from AI's Power Spikes?
AI In The News
Preparing for when the Machine Stops
In The News
Despite misleading marketing, Israeli company TeleMessage, used by Trump officials, can access plaintext chat logs
In The News
RK3588 - Implementing a Vectorscope for processing video in real time
In The News
An Interactive Debugger for Rust Trait Errors
In The News
Get openSUSE Gear at oSC25
Linux News (official)
Introducing Kurchu for CentOS SIG Content Collections
Linux News (official)
Thinking Elixir 252 - Riding the Tidewave of AI-Enhanced Phoenix
Blogs/Articles/Talks/Podcasts
Erlang OTP-28.0-rc4 released!
Backend News (official)
The Uncanny Mirror
AI In The News
You can’t Git clone a team
In The News

View all threads ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap