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.
| Version |
Location |
Description |
Submitted By |
Date Submitted |
Date Corrected |
| Printed |
Page xi
Under the heading "Foreword", add a subheading "by Gisle Aas" |
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Anonymous |
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| Printed |
Page xiv
Second line |
Correct
http://www.w3.org/TR/html401/interact/forms/
to
http://www.w3.org/TR/html401/interact/forms
(just removing the final "/")
|
Anonymous |
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| Printed |
Page 7
Table 1-1 |
Several things wrong with the table contents. Here it is, all fixed:
Distribution CPAN directory Minimal Version Needed
libwww-perl modules/by-module/Net 5.68
URI modules/by-module/URI 1.23
libnet modules/by-module/Net 1.12
HTML-Tagset modules/by-module/HTML 3.03
HTML-Parser modules/by-module/HTML 3.27
HTML-Tree modules/by-module/HTML 3.17
MIME-Base64 modules/by-module/MIME 2.16
Compress-Zlib modules/by-module/Compress 1.19
Digest-MD5 modules/by-module/Digest 2.23
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Anonymous |
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| Printed |
Page 7
end of first paragraph after the table |
After "get the latest." add a new sentence:
"This book is about the latest version of LWP! Upgrade now!"
|
Anonymous |
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| Printed |
Page 7
in the paragraph before heading "Unpack and configure" |
Change both instances of
authors/id/G/GA/GAAS
to
modules/by-module/MIME
|
Anonymous |
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| Printed |
Page 11
example 1-1 |
change "use LWP::Simple;" to "use LWP::Simple 1.36;"
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Anonymous |
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| Printed |
Page 11
example 1-2 |
change "use LWP;" to "use LWP 5.58;"
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Anonymous |
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| Printed |
Page 12
example 1-3 |
change "use LWP::UserAgent;" to "use LWP::UserAgent 2.003;"
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Anonymous |
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| Printed |
Page 13
example 1-5 |
change "use HTML::TreeBuilder;" to "use HTML::TreeBuilder 3.13;"
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Anonymous |
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| Printed |
Page 14
end of the chapter text |
Add a new section with a heading "Upgrade Now!" with this as the text:
If you're having trouble getting any code from the book to work, the
absolute first thing you should do is make sure you've got a recent version
of LWP installed! Here's my favorite incantation for seeing what version
you have:
perl -e "use LWP 1000000000"
It will say something like:
LWP version 1000000000 required--this is only version 5.68 at -e line 1.
BEGIN failed--compilation aborted at -e line 1.
If the version number you see in "this is only version 5.68" is lower that
5.68, upgrade! This book is not about old versions of LWP, but just about
modern versions -- the more modern the better, since we're constantly
improving its performance and interface. If you're using an old version,
you're missing out on years of improvements that Gisle, me, and many others
have added for you.
Just to pick two examples: in older LWP versions, you would load the class
HTTP::Cookies::Netscape not with the expected "use HTTP::Cookies::Netscape"
line, but with "use HTTP::Cookies". Moreover, old versions didn't
understand cookies files from recent Mozilla versions. A more compelling
example is that in old LWP versions, LWP::UserAgent had no $browser->get or
$browser->post methods -- and this book uses those methods heavily, because
the alternative is a much less friendly syntax: use HTTP::Request::Common;
$browser->request(GET(...),...); and the like.
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Anonymous |
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| Printed |
Page 16
|
The examples at the bottom of page 16 and the top of 17 mistakenly show
"+" separating form=value pairs. It should be "&"!
So:
Take this:
name=Hiram%20Veeblefeetzer+age=35+country=Madagascar
and correct to:
name=Hiram%20Veeblefeetzer&age=35&country=Madagascar
And later, take this:
$query = "name=$n+age=$a+country=$c";
print $query;
name=Hiram%20Veeblefeetzer+age=35+country=Madagascar
and correct it to:
$query = "name=$n&age=$a&country=$c";
print $query;
name=Hiram%20Veeblefeetzer&age=35&country=Madagascar
|
Anonymous |
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| Printed |
Page 17
the second line from the bottom |
Correct
<html>
to
</html>
|
Anonymous |
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| Printed |
Page 19
Last sentence |
The code font is used for the word "print" in the last sentence on page 19:
"Some functions return the document, others save or print the document."
Since this is _not_ a reference to a function, the word "print" should not use the
code font.
|
Anonymous |
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| Printed |
Page 24
example 2-5 |
change "use LWP;" to "use LWP 5.58;"
|
Anonymous |
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| Printed |
Page 28
1st new paragraph, 7th line down on the page. |
Take this:
(doc, status, success, resp) = do_GET(URL, [form_ref, [headers_ref]]);
And correct it to:
(doc, status, success, resp) = do_POST(URL, [form_ref, [headers_ref]]);
|
Anonymous |
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| Printed |
Page 31
third code line |
change "use LWP;" to "use LWP 5.58;"
|
Anonymous |
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| Printed |
Page 32
2nd paragraph, second line |
There's slightly too much space after the comma in "a firemwall, or"
|
Anonymous |
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| Printed |
Page 37
Fifth (non-code) paragraph, second sentence |
Correct to:
If this $browser object has a protocols_allowed list (and most don't),
then is_protocol_supported returns true only for protocols that are in
that list, and which LWP supports. But if $browser object is normal in
not having a protocols_allowed list, then is_protocol_supported returns
true for any protocol that LWP supports and which isn't in
protocols_forbidden.
|
Anonymous |
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| Printed |
Page 40
second codeblock, fifth and sixth lines |
Correct both instances of "$response" to "$resp".
|
Anonymous |
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| Printed |
Page 40
six lines from the bottom |
Correct
my $resp = $browser->get('http://www.perl.com'
to
my $resp = $browser->get('http://www.perl.com',
(just adding a comma to the end)
|
Anonymous |
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| Printed |
Page 41
first line of first new codeblock |
Correct
my $resp = $browser->get('http://www.perl.com/'
to
my $resp = $browser->get('http://www.perl.com/',
(just adding a comma to the end)
|
Anonymous |
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| Printed |
Page 41
first line of second-to-last codeblock |
Correct
my $resp = $browser->get('http://www.perl.com/'
to
my $resp = $browser->get('http://www.perl.com/',
(just adding a comma to the end)
|
Anonymous |
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| Printed |
Page 43
The first line of the 2nd and 5th code examples under "Status Line" |
Correct "$resp = " to "$response = ".
|
Anonymous |
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| Printed |
Page 45
second-to-last codeblock |
Correct the line:
$mins = int($age/60); $age -= $minutes * 60;
to
$mins = int($age/60); $age -= $mins * 60;
|
Anonymous |
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| Printed |
Page 47
Third line of the last paragraph |
Correct "LWP::Cookies" to "HTTP::Cookies"
|
Anonymous |
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| Printed |
Page 48
first code line |
change "use URI;" to "use URI 1.23;"
|
Anonymous |
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| Printed |
Page 51
last line, second from last paragraph |
reads:
userinfo, server, or port components).
should be:
userinfo, host, or port components).
Also, on the NEXT line, "server()" should be "host()"
|
Anonymous |
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| Printed |
Page 53
The third line of each of the first two code sections |
Correct "$uri->" to "$url->".
(Look close!)
|
Anonymous |
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| Printed |
Page 59
fifth line, paragraph after code sample |
reads:
city, state, and a submit button called zip.
should be:
city, state, zip, and a submit button called Search
|
Anonymous |
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| Printed |
Page 59
second to last paragraph, next to last line |
reads:
call to call
should be:
call
|
Anonymous |
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| Printed |
Page 61
example 5-1 |
change "use URI;" to "use URI 1.23;"
|
Anonymous |
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| Printed |
Page 75
Second-from-last line of the codeblock |
"ds" => "30",
should be:
"ds" => "100",
|
Anonymous |
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| Printed |
Page 85
first code line |
change "use LWP::Simple;" to "use LWP::Simple 1.36;"
|
Anonymous |
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| Printed |
Page 97
about a dozen lines down |
Correct this line:
die "Couldn't get $doc_url: ", $resp->status_line
to:
die "Couldn't get $doc_url: ", $response->status_line
|
Anonymous |
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| Printed |
Page 97
14th non-blank codeline, right under "{ # Get..." |
Take
$doc_url = $response->request->base;
and correct it to:
$doc_url = $response->base;
|
Anonymous |
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| Printed |
Page 98, 99
All the code in this section |
Sorry, this code doesn't work anymore -- Weather Underground has changed
their HTML at least twice since the book went to press. You're on your
own with getting it to work -- and (the hard part) KEEPING it working.
|
Anonymous |
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| Printed |
Page 105
second "#" line in the codeblock in the middle of the page. |
Correct this comment line:
# process the text in $text->[1]
to this:
# process the text in $token->[1]
|
Anonymous |
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| Printed |
Page 105
third code line |
change "use HTML::TokeParser;" to "use HTML::TokeParser 2.24;"
|
Anonymous |
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| Printed |
Page 106
Next-to-last paragraph |
Book reads:
<img src="mybc1998.jpg" src="BC1998! WHOOO!">
Should be (with alt attribute)
<img src="mybc1998.jpg" alt="BC1998! WHOOO!">
|
Anonymous |
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| Printed |
Page 111
Start of new paragraph in the middle of the page |
Clarify
If you though the contents of $url could be very large,
to
If you thought the content in $resp could be very large,
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Anonymous |
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| Printed |
Page 120
3rd paragraph, 2nd sentence |
"actual" should be "actually"
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Anonymous |
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| Printed |
Page 122
three lines under the new heading "First Code" |
change "use HTML::TokeParser;" to "use HTML::TokeParser 2.24;"
|
Anonymous |
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| Printed |
Page 126
first line under the heading "Debuggability" |
correct "all the links" to "all the lines"
|
Anonymous |
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| Printed |
Page 134
example 9-2 |
change "use HTML::TreeBuilder 3;" to "use HTML::TreeBuilder 3.13;"
|
Anonymous |
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| Printed |
Page 135
Parse Options Section |
Two incidents of mistake.
A) In example beginning with
$comments = $root->strict_comment();
last statement incorrectly reads
$comments = $root->strict_comments(); -- Omit 's'
B) Two paragraphs later beginning with
$root->strict_comments([boolean]);
Incorrect with 's' again, should read
$root->strict_comment([boolean]);
|
Anonymous |
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| Printed |
Page 140
Second paragraph under "Traversing" heading |
Correct
The traverse() method lets you both:
to
The traverse() method lets you do both:
|
Anonymous |
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| Printed |
Page 144
first codeblock |
Add before the first line:
use URI;
|
Anonymous |
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| Printed |
Page 144
about eight lines into the first codeblock |
Correct
if(@children == 1 and ref $children[0] and $children[0]->tag eq 'a')
to
if(@children == 1 and ref $children[0] and $children[0]->tag eq 'a') {
(Just adding a "{" at the end)
|
Anonymous |
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| Printed |
Page 149
example 10-1 |
change "use HTML::TreeBuilder;" to "use HTML::TreeBuilder 3.13;"
|
Anonymous |
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| Printed |
Page 149
Example 10-1 (lines 11 and 16 of code) |
The attribute should be 'class' not 'style'. The value should be 'mutter' not
'mumble' (cf. p. 148).
Take
$h3c->attr('style', 'scream');
and correct to
$h3c->attr('class', 'scream');
And take
$h3r->attr('style', 'mumble');
and correct to:
$h3r->attr('class', 'mutter');
And in the dump on page 150, the bolded line, correct the second and third
bolded lines to:
<h2 class="scream"> @0.1.0
and to
<h2 class="mutter"> @0.1.1
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Anonymous |
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| Printed |
Page 151
Second line of the last paragraph |
Correct
"There's no point is"
to
"There's no point in"
|
Anonymous |
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| Printed |
Page 152
HTML example, sixth-from-last line |
Take
<tr class="top_button_bar">
and correct to:
<tr class="bottom_button_bar">
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Anonymous |
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| Printed |
Page 166
last codeblock |
change "use HTTP::Cookies;" to "use HTTP::Cookies 1.30;"
|
Anonymous |
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| Printed |
Page 174
2nd line of first codeblock |
Take
$browser->name('ReportsBot/1.01');
and correct to
$browser->agent('ReportsBot/1.01');
|
Anonymous |
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| Printed |
Page 175
the first paragraph's fifth line |
Correct
is password protected
to
is password-protected
|
Anonymous |
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| Printed |
Page 178
1st paragraph, 4th line |
"writing" should be "write"
|
Anonymous |
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| Printed |
Page 181
second code line |
change "use LWP::RobotUA;" to "use LWP::RobotUA 1.19;"
|
Anonymous |
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| Printed |
Page 187
the last codeblock's first line |
Correct
my %notable_url_error; # URL => error messageS
to
my %notable_url_error; # URL => error message
(Just removing the "S")
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Anonymous |
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| Printed |
Page 195
|
Take
my $hit_limit = $option{'h'} || 500;
and correct it to:
my $hit_limit = $option{'n'} || 500;
[i.e. 'n' for 'network hits', not 'h' for 'help']
|
Anonymous |
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| Printed |
Page 196
about 3/5ths of the way thru the codeblock |
Correct
sub report { # This that gets run at the end.
to
sub report { # This gets run at the end.
|
Anonymous |
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| Printed |
Page 220
entry for character 982 |
The character should not be an uppercase pi, but instead should be
a lowercase pi that looks like an omega with a crossbar --
just like TeX varpi -- as seen at http://interglacial.com/~sburke/varpi.gif
|
Anonymous |
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| Printed |
Page 228
four lines from the bottom |
Correct
it's term (how long
to
its term (how long
(Just deleting the apostrophe)
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Anonymous |
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