Errata

#Form.Department#

in the example, the second and the third input tags are identical. For the example to
work, its name should be DELETE instead of EDIT....

The book states "This option should be used when writing data to persistent variables, as the case with the
second CFLOCK tag in our example".

However, the second CFLOCK tag is

<CFLOCK SCOPE="Session" TYPE="ReadOnly" TIMEOUT="30" THROWONTIMEOUT="Yes">
<CFOUTPUT>
Username: #Session.Username#<BR>
Access Level: #Session.AccessLevel#
</CFOUTPUT>
</CFLOCK>

This does not write data to persistent variables, it reads it. Perhaps the text in the second paragraph should read "as the case with the FIRST CFLOCK tag in our example"

The third code example, which describes a method reducing the need for exclusive <CFLOCK> usage, will cause a "white-screen-of-death" error as written. The example is missing an isDefined() function call.

A corrected version of the example:

<cflock type="READONLY" timeout="30" scope="APPLICATION">
<cfif isdefined("application.init")>
<cfset request.init = application.init>
</cfif>
</cflock>

<cfif not isDefined("request.init")>
<cflock type="EXCLUSIVE" timeout="30" scope="APPLICATION">
<cfset application.init = 1>
<cfset application.foo = "bar">
</cflock>
</cfif>

"The SESSIONTIMEOUT attribute sets the timeout for any application variables..."
should be "The SESSIONTIMEOUT attribute sets the timeout for any session
variables..."

"THREADID accepts a Yes/No...." should be "THREAD accepts a Yes/No...."

"In Example 10-8" should be "In Example 10-9"

"The SELECT attribute indicates whether or not to display the column in the grid"
should be "The DISPLAY attribute indicates whether or not to display the column in
the grid"

Shouldn't the query name be something like "RemoveDateHired" rather than
"AddDateHired" ?

"This is accomplished by setting the ACTION attribute to Delete" should be "This is
accomplished by setting the ACTION attribute to Remove"

"In our example, we set the FILTER attribute so that only entries having a surname
(sn) beginning with smi ..." should be "In our example, we set the FILTER attribute
so that only entries having a surname (sn) beginning with s ..."

ATTRIBUTES="dn,cn,sn.givenName" should be ATTRIBUTES="dn,cn,sn,givenName"

"The USERNAME attribute specifies the common name (cn) of a user with authority to
delete entries" should be "The USERNAME attribute specifies the common name (cn) of a
user with authority to add entries"

USERNAME="cn=Directory Manager" should be USERNAME="Directory Manager"

"The complement value is arrived at by subtracting 1 from the matched record's
original score" should be "The complement value is arrived at by subtracting the
matched record's original score from 1"

fish<NEARN/10>carp<NEARN/10>bass<NEARN/10> should be
fish<NEAR/10>carp<NEAR/10>bass<NEAR/10>

I'm not even sure the last <NEAR/10> needs to be there.

character...

According to J.Friedl's "Mastering Regular Expressions" (O'Reilly), "The caret
and dollar are particular in that they match a position in the line
rather than any actual text characters themselves" (page 8)

a set, it must be used as the last character in the set or range of
characters...

AFAIR dollar sign is treated literally in character classes (author
calls them "sets"). Unfortunately I cannot find explicit quote in
Friedl's book. Ask him :)

"c" as well as "abc"

should be:

Likewise, searching for "[ab]?c" matches "c" as well as "ac"

*** [ab]?c will NOT match abc, because [ab] matches only ONE
character.

<CFSET NewString = REReplace("T8h3i53s 8a3 t3e2s9t.", "[[:digit:]]", "", "ALL")>

The text says that this line of code will output "This is a test." However, it only
outputs "This a test."

The book suggests naming a custom tag <CF_MyTag> "MyTag.cfm". On my copy of
CF5/Linux, the custom tag needs to be named "mytag.cfm" UNLESS it is in a registered
Custom Tags directory.

"... using the Increment() function" should be "... using the IncrementValue()
function"

The attribute URL="24-4.cfm" should read URL="24-4.cfm?Department="

It appears that part of the description for DatePart was coppied and pasted from
DateDiff. Because of that, the final line which says "If date1 is greater than
date2, a negative number is returned" is not applicable.

The example for GetDirectoryFromPath() uses the function GetTemplatePath() as its
argument. But GetTemplatePath is deprecated as of ColdFusion 4.0 (see page 848). The
example should be changed to use GetBaseTemplatePath(), as in

<cfoutput>This directory is: #GetDirectoryFromPath(GetBaseTemplatePath())#</cfoutput>