Errata for Ruby Best Practices
Submit your own errata for this product.
The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".
The following errata were submitted by our customers and approved as valid errors by the author or editor.
Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update
| Version |
Location |
Description |
Submitted By |
Date Submitted |
Date Corrected |
| Printed |
Page 44
just above the middle |
if the TCPSocket.new message fails in the method
Note from the Author or Editor:
pp44-45, anywhere you see socket.close, please replace with:
socket.close if socket |
Wolfgang Kittenberger |
Jul 29, 2009 |
|
| Printed |
Page 47
Example at the bottom |
As described later in Appendix C section
|
Daniel Kirsch |
Jul 12, 2009 |
|
| Printed |
Page 137
2nd code fragment |
In self.authenticate, new() is called with two arguments. The initializer only has one parameter. Note: wrong number of arguments in Ruby 1.8.
Note: very useful book.
Note from the Author or Editor:
Confirmed. Initialize method should be replaced with:
http://pastie.org/830829 |
Jeffrey L. Taylor |
Nov 24, 2009 |
|
| Printed |
Page 139
middle of page: def fib(n) |
before defining fib so you need to initialize @series somehow, e.g.:
@series=Array.new
@series[0] = 0
@series[1[ = 1
otherwise you will get a NoMethodError: undefined method `[]=' for nil:NilClass
Note from the Author or Editor:
Change example on p139 to:
def fib(n)
@series ||= []
@series[n] ||= fib(n-1) + fin(n-2)
end |
Wolfgang Kittenberger |
Aug 08, 2009 |
|
| Printed |
Page 196
Figure 7.1 |
The submit button displayed in Figure 7.1 displays 'Shoot!',
while the ERB template that is supposed to generate it uses
the value 'Shoot'
Note from the Author or Editor:
Replace template line with:
<input type="submit" value="Shoot!"> |
K.Oster |
Aug 02, 2009 |
|
| Printed |
Page 197
code fragment at bottom of page |
The second entry in the assignment to winning_combos should be
[
Note from the Author or Editor:
Necessary change is as reported. (This is not a duplicate, see page number) |
K.Oster |
Aug 02, 2009 |
|
| Printed |
Page 200
code fragment at top of page |
The second entry in the assignment to winning_combos should be
[
Note from the Author or Editor:
Necessary correction is as reported. |
K.Oster |
Aug 02, 2009 |
|
| Printed |
Page 216
Last paragraph |
Note from the Author or Editor:
Required change is exactly as reported
|
K.Oster |
Aug 02, 2009 |
|
