jon

jon

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 Erlang (and it’s progeny … should be: its

p. 205 chart O(n ln n) should be: O(n lg n)

p. 221 Ad Hoc Testing “run poke at our code manually”: I’m not sure exactly what is meant here. Maybe leave out “run”: poke at our code manually

p. 222 “Ignore a spew … makes it easier to ignore all the tests”: not sure what this means. “Ignore a spew”?

p. 226 “raise Exception”: needs to be indented two more spaces (significant in Python)

Most Liked

Juanadelacuesta

Juanadelacuesta

Hello!!!

I also notice on the possible answer for the exercise 8 (page 297, solution in ruby of the time parser) the regular expression for the tenths of minutes includes 6, so hours like 6:66 pm are valid.

Sereger

Sereger

p. 120 - in the second code snippet there seems to be one missing statement:
write_customer between the following two lines:

@balance = @balance.add(transaction_amount, 2)        #    |
# --> here, I think, write_customer call is missing
file.close                                            #  <--
zois-tasoulas

zois-tasoulas

Hi,
I also noticed the following (book with ISBN-13: 978-0-13-595705-9):

  • page 140, in the code for strings_fsm.rb, for the state in_string, I think the matching character should be a single backslash instead of two.
  • page 160, “When the top level calls my_car.move_at(30) , the method …”, the object name (my_car) does not align with the top-level code example (my_ride). I think one of the two should be changed so they align.
  • page 196, “But it applies to the bigger picture are well”, I think instead of “are” there should be “as”.

Where Next?

Popular Pragmatic Bookshelf topics Top

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...
New
simonpeter
When I try the command to create a pair of migration files I get an error. user=&gt; (create-migration "guestbook") Execution error (Ill...
New
joepstender
The generated iex result below should list products instead of product for the metadata. (page 67) iex&gt; product = %Product{} %Pento....
New
gilesdotcodes
In case this helps anyone, I’ve had issues setting up the rails source code. Here were the solutions: In Gemfile, change gem 'rails' t...
New
hgkjshegfskef
The test is as follows: Scenario: Intersecting a scaled sphere with a ray Given r ← ray(point(0, 0, -5), vector(0, 0, 1)) And s ← sphere...
New
brunogirin
When running tox for the first time, I got the following error: ERROR: InterpreterNotFound: python3.10 I realised that I was running ...
New
dsmith42
Hey there, I’m enjoying this book and have learned a few things alredayd. However, in Chapter 4 I believe we are meant to see the “&gt;...
New
jwandekoken
Book: Programming Phoenix LiveView, page 142 (157/378), file lib/pento_web/live/product_live/form_component.ex, in the function below: d...
New
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...
New
dachristenson
@mfazio23 Android Studio will not accept anything I do when trying to use the Transformations class, as described on pp. 140-141. Googl...
New

Other popular topics Top

Exadra37
I am thinking in building or buy a desktop computer for programing, both professionally and on my free time, and my choice of OS is Linux...
New
AstonJ
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-...
New
AstonJ
There’s a whole world of custom keycaps out there that I didn’t know existed! Check out all of our Keycaps threads here: https://forum....
New
dimitarvp
Small essay with thoughts on macOS vs. Linux: I know @Exadra37 is just waiting around the corner to scream at me “I TOLD YOU SO!!!” but I...
New
PragmaticBookshelf
Create efficient, elegant software tests in pytest, Python's most powerful testing framework. Brian Okken @brianokken Edited by Kat...
New
rustkas
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
Maartz
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. ...
New
PragmaticBookshelf
Author Spotlight Mike Riley @mriley This month, we turn the spotlight on Mike Riley, author of Portable Python Projects. Mike’s book ...
New
New
PragmaticBookshelf
Programming Ruby is the most complete book on Ruby, covering both the language itself and the standard library as well as commonly used t...
New

Sub Categories: