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bpurinton
Title: Hotwire Native For Rails Developers Collected Errata from our class at the University of Chicago Great book, Joe! We have colle...
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brandtryan
Steps to Reproduce: Follow tutorial for depot app up to page 73. Run the following as instructed: bin/dev Expected Result: Server s...
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mrachow
In section Recognizers the api example. Should be Source[https://media.pragprog.com/titles/tpantlr2/code/api/TestSimple.java]
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rabbott
`<.header> Listing Products … ` The closing tag should be </.header>. This example and error appear twice on this page.
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rabbott
There’s a sentence on page 103 that reads, “With just a hand full of products in our database, this isn’t necessarily a huge win.” I bel...
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This Week's TrendingTop

mrachow
In section Recognizers the api example. Should be Source[https://media.pragprog.com/titles/tpantlr2/code/api/TestSimple.java]
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rabbott
On page 101 a sentence reads, “Over time, events will continue to transform the socket, one event a time.” I believe it should end with ...
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rabbott
There’s a sentence on page 103 that reads, “With just a hand full of products in our database, this isn’t necessarily a huge win.” I bel...
New
bpurinton
Title: Hotwire Native For Rails Developers Collected Errata from our class at the University of Chicago Great book, Joe! We have colle...
New
rabbott
`<.header> Listing Products … ` The closing tag should be </.header>. This example and error appear twice on this page.
New
brandtryan
Steps to Reproduce: Follow tutorial for depot app up to page 73. Run the following as instructed: bin/dev Expected Result: Server s...
New
rabbott
One of the examples has what I think is supposed to be an HTML comment but the opening tag is goofy. The example reads: &lt;!== lib/pent...
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Tretent
In the “shipped” test, particularly in the last assertion, if I use mail.body.to_s I get the following error: Minitest::Assertion: Expec...
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This Month's Trending Top

bunnahabhain
Code shows: @line_item = @cart.line_items.build(product: product) This produces an error of " * Product must exist" when you press the ...
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Javaru
Pg 41 states “Run the code, and you’ll see the placeholder message in a small window, just like last time.” for the code astronomy/v4/src...
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Javaru
I suspect this is something that will be caught in editing, but just in case not… The text box at the bottom of page 78 extends on to the...
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eajrezz
Thank you for writing such a helpful book! I’ve been enjoying learning about Hotwire Native and Rails. I have a question regarding hidin...
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dhmitchell
In “gallery/v14/src/main/kotlin/com/example/gallery/GetImageFromFile.kt” won’t the .use always call channel.close() on exit? if so, why...
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bunnahabhain
The file: app/views/line_items/_line_item.html.erb was created in iteration D2, when we ran the generator: bin/rails generate scaffold L...
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Javaru
For the example astronomy/v3/src/main/kotlin/com/example/astronomy/AstronomyApplication.kt, despite the statement “That try–catch block i...
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Javaru
As a minor suggestion, in timers/v19/src/main/kotlin/com/example/timers/TimerApplication.kt, you might want to consider adding // @format...
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Javaru
For pets/v2/src/main/kotlin/com/example/pets/Helpers.kt (and in subsequent versions), I think it might be helpful to change the block par...
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Javaru
For coffee/v3/src/main/kotlin/com/example/coffee/CoffeeApplication.kt, on pg 80, it states that the output will be: Done launching two c...
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Josh
I just bought this book today and am having trouble getting the sample code running on an M1 MacBook. I cd into chapter_01/02 do git ini...
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rabbott
The render() function examples use ‘ ’ to add space between elements. The same thing could be achieved by adding the tailwind class ‘mt-1...
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Javaru
When I run pets/v23 from page 225, I get a quick flash of the “control panel” window, and then the program exits. There is no output in t...
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Javaru
When I ran the parallel/v8 example on page 125, I did not get the results described of not seeing the timer’s output until the program al...
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This Year's Trending Top

ahamez
Hello @seanmor5 , When upgrading Axon to 0.7, evaluation fails with: ** (ArgumentError) argument at position 3 is not compatible with c...
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bjnord
Ellie Fairholm @elliefairholm and Josep Giralt D’Lacoste @Gilacost, Running dialyzer on both localhost and GitHub CI gives the following ...
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msducheminjr
When you generate a new Rails, app, there is no version constraint on tailwindcss-rails in the Gemfile. The gem released version 4.0.x on...
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bjpcjp
Just finished installing ruby 3.3.6 and rails 8.0.0 on ubuntu 24.04 LTS. ‘rails new demo’ seems to be building correctly but is throwin...
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nusco
To readers of “Programming Machine Learning”: the code in the book runs on old-ish versions of Python and its libraries. If you have trou...
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jjeffers
@herbert Copying the example code from GitHub - thebracket/HandsOnRust: The source code that accompanies Hands-on Rust: Effective Learni...
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SoldierCoder
@elliefairholm and @Gilacost All of Chapter 2 works fine until this last bit. variable “issues” { type = list(object({ title = st...
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patrickdavey
I am using elixir 1.16.2 and when I run the mix compile it’s erroring with: == Compilation error in file lib/ecto/query.ex == ** (Kernel...
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zacksiri
@seanmor5 When I try the Nx.Random.uniform_split(new_key, split: {}) function in page 130 I got an undefined function error ** (Undefin...
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enoonan
In this section, at the point where it tells the reader to “Start up the server, log in, and point your browser at /promo… You should see...
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7hoenix
@autodidaddict Real World Event Sourcing: Page 105 of version 3 (PDF) Inconsistent descriptions around whether Aggregates can process ...
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marky1124
@rubys The “Configuration” section includes the statement “We modified our database configuration to use MySQL in production”. It should...
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hoozifachi
In ‘Moving Entities with Bevy’ bullet point 3, ‘Set the delta variable to a vector (containing x, y and z values)’ may be a little confus...
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Trending Last Three YearsTop

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ggerico
I got this error when executing the plot files on macOS Ventura 13.0.1 with Python 3.10.8 and matplotlib 3.6.1: programming_ML/code/03_...
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dachristenson
I just bought this book to learn about Android development, and I’m already running into a major issue in Ch. 1, p. 20: “Update activity...
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mcpierce
@mfazio23 I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
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tkhobbes
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...
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SlowburnAZ
Getting an error when installing the dependencies at the start of this chapter: could not compile dependency :exla, "mix compile" failed...
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bjnord
Hello @herbert ! Trying to get the very first “Hello, Bracket Terminal!" example to run (p. 53). I develop on an Amazon EC2 instance runn...
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gorkaio
root_layout: {PentoWeb.LayoutView, :root}, This results in the following following error: no “root” html template defined for PentoWeb...
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davetron5000
Hello faithful readers! If you have tried to follow along in the book, you are asked to start up the dev environment via dx/build and ar...
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EdBorn
Title: Agile Web Development with Rails 7: (page 70) I am running windows 11 pro with rails 7.0.3 and ruby 3.1.2p20 (2022-04-12 revision...
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dtonhofer
@parrt In the context of Chapter 4.3, the grammar Java.g4, meant to parse Java 6 compilation units, no longer passes ANTLR (currently 4....
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roadbike
From page 13: On Python 3.7, you can install the libraries with pip by running these commands inside a Python venv using Visual Studio ...
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andreheijstek
After running /bin/setup, the first error was: The foreman' command exists in these Ruby versions: That was easy to fix: gem install fore...
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Trending Over 3 YearsTop

nicoatridge
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...
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adamwoolhether
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 ...
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leonW
I ran this command after installing the sample application: $ cards add do something --owner Brian And got a file not found error: Fil...
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brunogirin
When I run the coverage example to report on missing lines, I get: pytest --cov=cards --report=term-missing ch7 ERROR: usage: pytest [op...
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jskubick
I found an issue in Chapter 7 regarding android:backgroundTint vs app:backgroundTint. How to replicate: load chapter-7 from zipfile i...
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yulkin
your book suggests to use Image.toByteData() to convert image to bytes, however I get the following error: "the getter ‘toByteData’ isn’t...
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johnp
Running the examples in chapter 5 c under pytest 5.4.1 causes an AttributeError: ‘module’ object has no attribute ‘config’. In particula...
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cro
I am working on the “Your Turn” for chapter one and building out the restart button talked about on page 27. It recommends looking into ...
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jon
Some minor things in the paper edition that says “3 2020” on the title page verso, not mentioned in the book’s errata online: p. 186 But...
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abtin
page 20: … protoc command… I had to additionally run the following go get commands in order to be able to compile protobuf code using go...
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jamis
The following is cross-posted from the original Ray Tracer Challenge forum, from a post by garfieldnate. I’m cross-posting it so that the...
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AufHe
I’m a newbie to Rails 7 and have hit an issue with the bin/Dev script mentioned on pages 112-113. Iteration A1 - Seeing the list of prod...
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HarryDeveloper
Hi @venkats, It has been mentioned in the description of ‘Supervisory Job’ title that 2 things as mentioned below result in the same eff...
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