Pragmatic>PragProg

Programming Elixir 1.6: Missing a terminating ] (page 72)

dewetblomerus

dewetblomerus

Programming Elixir 1.6: Missing a terminating ] (page 72)

It is the first example on page 72, the one with the highlighting.

[ 1  | [ 2 | [ 3 | [] ] ]

Needs to be changed to:

[ 1  | [ 2 | [ 3 | [] ] ] ]

4 opening square brackets and 4 closing square brackets.

Two rows down, there is a working example so hopefully, people have been using that to actually copy/paste the example, but I was trying to understand the recursive list structure and this tripped me up for a moment before I realized what is going on.

1 comment
#errata/book-programming-elixir-1-6
0 726 1

First Post!

Margaret

Margaret

Editor at PragProg

Hi @dewetblomerus. Thanks for finding that mistake! The author isn’t here on Devtalk, but I will make note of the erratum in case we ever do a new edition.

Post #2

Popular Pragmatic topics Top

abtin
Pragmatic>PragProg

Distributed Services With Go - gogoproto on linux
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...
/book-distributed-services-with-go#errata
14 2918 7
New
jon
Pragmatic>PragProg

The Pragmatic Programmer, 20th Anniversary Edition errata
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...
/book-the-pragmatic-programmer-20th-anniversary-edition#errata
10 2610 9
New
kuroneko
Pragmatic>PragProg

The Ray Tracer Challenge: Rational Form inverses (pg 39-41)
Whilst the author has been careful to provide exact results for the tests elsewhere in the book (such as surds with the transformation te...
#errata/book-the-ray-tracer-challenge
3 1053 0
New
jesse050717
Pragmatic>PragProg

Web Development with Clojure, Third Edition: Issue adding Shadow CLJS
Title: Web Development with Clojure, Third Edition, pg 116 Hi - I just started chapter 5 and I am stuck on page 116 while trying to star...
#question/book-web-development-with-clojure-third-edition
4 1188 4
New
simonpeter
Pragmatic>PragProg

Web Development with Clojure, Third Edition: (create-migration "guestbook") not working (page 9)
When I try the command to create a pair of migration files I get an error. user=> (create-migration "guestbook") Execution error (Ill...
#errata/book-web-development-with-clojure-third-edition
5 1779 4
New
edruder
Pragmatic>PragProg

Docker for Rails Developers: Notes for Rails 6.1, Ruby 2.7.2
I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here. ...
/book-docker-for-rails-developers
9 1171 1
New
brunogirin
Pragmatic>PragProg

Python Testing with pytest, Second Edition: error when running tox in parallel (page 151)
When trying to run tox in parallel as explained on page 151, I got the following error: tox: error: argument -p/–parallel: expected one...
#errata/book-python-testing-with-pytest-second-edition
0 1103 1
New
akraut
Pragmatic>PragProg

Programming Phoenix LiveView: Display Image Uploads (pdf p142)
The markup used to display the uploaded image results in a Phoenix.LiveView.HTMLTokenizer.ParseError error. lib/pento_web/live/product_l...
#errata/book-programming-phoenix-liveview
2 2080 9
New
bjnord
Pragmatic>PragProg

Hands-on Rust: Chapter 3: Can't get first hello to run
Hello @herbert ! Trying to get the very first “Hello, Bracket Terminal!" example to run (p. 53). I develop on an Amazon EC2 instance runn...
#question/book-hands-on-rust
0 1119 2
New
redconfetti
Pragmatic>PragProg

Docker for Rails Developers - 'docker-machine' command deprecated (page 156)
Docker-Machine became part of the Docker Toolbox, which was deprecated in 2020, long after Docker Desktop supported Docker Engine nativel...
/book-docker-for-rails-developers#suggestion
0 894 0
New

Other popular topics Top

ohm
Science/Tech>Tech Chat

Games! Which do you play?
Which, if any, games do you play? On what platform? I just bought (and completed) Minecraft Dungeons for my Nintendo Switch. Other than ...
#games
245 5130 101
New
AstonJ
General Dev>Code Editors

Poll: Which code editor do you use?
You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
#polls#code-editors/vim/emacs/vscode#notepad/sublime-text#atom/textmate#codespaces#brackets#community/onivim#geany
105 4440 50
New
AstonJ
General Dev>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 5137 11
New
AstonJ
General Dev>Hardware

Planck vs Preonic vs Subatomic (Keyboards)
I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me. I think the Planck and the Preonic (o...
/keyboards#mechanical-keyboards#ortholinear#planck#preonic
105 14119 47
New
Rainer
General Dev>Dev Chat

Do you have any (non-dev) hobbies?
Not sure if following fits exactly this thread, or if we should have a hobby thread… For many years I’m designing and building model air...
#community
200 3402 78
New
foxtrottwist
General Dev>Dev Chat

Warp—The blazingly fast, Rust-based terminal
A few weeks ago I started using Warp a terminal written in rust. Though in it’s current state of development there are a few caveats (tab...
/rust#terminal
52 4626 22
New
PragmaticBookshelf
Community>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 3019 14
New
First poster: bot
General Dev>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 2509 0
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Bruce Tate (Author) Interview and AMA!
Author Spotlight: Bruce Tate @redrapids Programming languages always emerge out of need, and if that’s not always true, they’re defin...
/ruby/elixir/book-programming-phoenix-liveview/phoenix#liveview#book-seven-moreuages-in-seven-weeks#book-sevenuages-in-seven-weeks
54 4335 23
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Noel Rappin (Author)
A Ruby-Centric Chat with Noel Rappin @noelrappin Once you start noodling around with Ruby you quickly figure out, as Noel Rappi...
/ruby/book-programming-ruby-3-2-5th-edition#author-spotlight/rails
41 2595 20
New
Back to top

Latest in PragProg

Ash Framework B4.0: Typo (page 83)
PragProg Customers
Hotwire Native for Rails Developers: Collected Errata from our class at the University of Chicago
PragProg Customers
Agile Web Development with Rails 7 p1.0—May2023: foreman Gem (page 73)
PragProg Customers
The Definitive ANTLR 4 Reference: No download link provided for TestSimple.java (Page 240)
PragProg Customers
Programming Phoenix LiveView: Wrong closing element tag (page 106)
PragProg Customers
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

View all threads ❯

Latest (all)

New Lego-building AI creates models that actually stand up in real life
AI In The News
Detect and crash Chromium bots with one weird trick (bots hate it!)
In The News
Intel: Winning and Losing
In The News
Symfony v7.3.0-BETA2 released!
Backend Official News
Actix web-v4.11.0, http-v3.11.0 and awc-v3.7.0 released!
Backend Official News
Cell Mates: Extracting Useful Information From Tables for LLMs
AI In The News
Odin, A Pragmatic C Alternative with a Go Flavour
Backend In The News
What's new in Swift 6.2?
iOS In The News
New Tool: lsds - List All Linux Block Devices and Settings in One Place - Tanel Poder Consulting
Linux In The News
Kodee’s Kotlin Roundup: Compose Multiplatform for iOS is Stable (Plus AI, Web, and More!)
Backend Official News
Write the most clever code you possibly can
In The News
Dasung Paperlike 13K is a 13.3 inch E Ink color monitor - Liliputing
In The News
V weekly.2025.19 released!
Backend Official News
Wikidive - AI-Guided Wikipedia Exploration
AI In The News
Node.js v24.0.1 released!
Backend Official 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