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Setup Asset Store
On page 120 we’re told to make a fn setup in asset_manager, in a format of a bevy system, this is done after being told...
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The function body as it’s presented is quite unwieldy. It was probably a good opportunity to point out to the audience that ? can also be...
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The where T clause in impl Plugin for a code that has been written before now silently has a +Copy added to it, in the middle of 3 other ...
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On the page 57 you show pcg_rand = "0.13" as a search result for the PCG algo, but later use rand_pcg on the page 58. Which are two diffe...
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In this code, you generated a random u32 and then converted it to a usize to match the sprite index type. What you wanted was an f32 betw...
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This Week's Trending
Don’t repeat yourself (DRY). Solve a problem or implement an algorithm once, and you can reuse the
result over and over again in a librar...
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On the page 57 you show pcg_rand = "0.13" as a search result for the PCG algo, but later use rand_pcg on the page 58. Which are two diffe...
New
In this code, you generated a random u32 and then converted it to a usize to match the sprite index type. What you wanted was an f32 betw...
New
The where T clause in impl Plugin for a code that has been written before now silently has a +Copy added to it, in the middle of 3 other ...
New
The function body as it’s presented is quite unwieldy. It was probably a good opportunity to point out to the audience that ? can also be...
New
Setup Asset Store
On page 120 we’re told to make a fn setup in asset_manager, in a format of a bevy system, this is done after being told...
New
This Month's Trending
Hi @andatki,
Happy New Year! Just getting back into the book after a long pause and decided to restart from the beginning.
Postgres.app...
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At start of the page log_out_user/1on_mount/4 should be on separate lines
iex> exports PentoWeb.UserAuth
__phoenix_verify_routes__/1
...
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Title: A Common-Sense Guide to AI Engineering
Snippet: you want a create a robust, production-grade, fully-featured AI app (page Preface...
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The sample code linked from the book page does not contain the file reader/snake.clj.
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Title: Programming Phoenix LiveView: Mount and Render the Product Index • 115
… let’s examine the socket assigns now. Add the following...
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There’s no simple_form/1 in phoenix 1.8
So this code
<div>
<.simple_form
for={@form}
id="promo-form"
phx-change=...
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In chapter 1, page6: “Remember, the problem wants the maximum sum of bitstrings of length N.”
Bitstrings are not the same as lists.
The...
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2nd paragraph refers to ‘move operation updates the x coordinate’ it show presumably have said ‘y coordinate’, paragraph before, correctl...
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The exercise states
“Create a contramap/1 that normalizes strings before comparing them—make sure they’re trimmed and use the same case...
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This Year's Trending
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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Title: Agile Web Development with Rails 8 (page 9)
Suggestion: Add watchman to the list of packages to install
In Chapter 6 page 71 whe...
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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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Hello, I was struggling a bit with completing chapter 11, iteration F4.
While the changes done in the “admin” (maintenance?) panel to st...
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On page 93, reference is made to the file lorem.jpg, which should be located in the test/fixtures/files folder; however, the file is not ...
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The first time the navigatorHostId is set it uses the value R.id.main_nav_host supposedly added to to activity_main.xml in previous step...
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The text "“ What we do have is that suspension-point icon next to awaitResponse,”
presumes we didn’t have those icons in the execute ver...
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Context
Hardware & OS:
OS: macOS Tahoe 26.0 arm64
Host: MacBook Pro
Observation
One of the code snippets as seen in epub is this...
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Thanks for the excellent book @elliefairholm and @Gilacost , really well paced and clearly written.
One small suggestion: I think it wou...
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Has anyone else run into this error message? Class not decoded 'valsrevenge.HealthComponent'
I have seen this when trying to run the exa...
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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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Showing how to add the hotwire-native-app variant in .tailwind.config.js is great for readers using Tailwind 3. However, new Rails 8 appl...
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Page 9 has the reader set up hello_bevy/Cargo.toml to inherit the workspace bevy dependency with:
bevy = { workspace = true }
However, ...
New
Hello!
I’m neither an Elixir nor Phoenix or Ash expert, but I believe I found misinformation in the A brief detour into LiveView process...
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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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Trending Last Three Years
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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@mfazio23
Android Studio will not accept anything I do when trying to use the Transformations class, as described on pp. 140-141. Googl...
New
@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,...
New
Getting an error when installing the dependencies at the start of this chapter:
could not compile dependency :exla, "mix compile" failed...
New
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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root_layout: {PentoWeb.LayoutView, :root},
This results in the following following error:
no “root” html template defined for PentoWeb...
New
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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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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I’ve got to the end of Ch. 11, and the app runs, with all tabs displaying what they should – at first. After switching around between St...
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Docker-Machine became part of the Docker Toolbox, which was deprecated in 2020, long after Docker Desktop supported Docker Engine nativel...
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Is there any plan for volume 2? :slight_smile:
New
@mfazio23
I had the project running as of p. 249, but by the end of Ch. 10 (p. 258), something new has made the program crash when it tr...
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@rubys
Title: Name of book: text: Agile Web Development Rails6, p. 183, Iteration G1: Capturing an Order.
I started working on a web de...
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Disclaimer: I hope all of this is accurate, and not the result of some stupid typo I failed to notice. Anyways…
This post comprises 2 is...
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the statement “The quantum state of a qubit is obtained by reading across a row … |0011>” seems quite problematic to me.
First, the q...
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Trending Over 3 Years
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...
New
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 ...
New
I ran this command after installing the sample application:
$ cards add do something --owner Brian
And got a file not found error:
Fil...
New
When I run the coverage example to report on missing lines, I get:
pytest --cov=cards --report=term-missing ch7
ERROR: usage: pytest [op...
New
I found an issue in Chapter 7 regarding android:backgroundTint vs app:backgroundTint.
How to replicate:
load chapter-7 from zipfile i...
New
your book suggests to use Image.toByteData() to convert image to bytes, however I get the following error: "the getter ‘toByteData’ isn’t...
New
@mfazio23
I’m following the indications of the book and arriver ad chapter 10, but the app cannot be compiled due to an error in the Bas...
New
Running the examples in chapter 5 c under pytest 5.4.1 causes an AttributeError: ‘module’ object has no attribute ‘config’.
In particula...
New
I think I might have found a problem involving SwitchCompat, thumbTint, and trackTint.
As entered, the SwitchCompat changes color to hol...
New
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_...
New
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 ...
New
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...
New
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...
New
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...
New
The allprojects block listed on page 245 produces the following error when syncing gradle:
“org.gradle.api.GradleScriptException: A prob...
New
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