Best of Talk (4/30/03)

 
May 02, 2003
by Dina Hess

Title: Can CFLOGIN Work Across Browser Instances?
Date: 04/30/03      13 Posts
Summary: CF gurus discuss why CFLOGIN, which relies on a "session" cookie, should or should not work across multiple browser sessions on a single client. A reference to RFC 2965 is included as a resource for standards on state maintenence.
 
Title: DateFormat() Question
Date: 04/30/03      15 Posts
Summary: You can update dates stored in a varchar field with irregular formats like SEP 02, DEC98, or SEPT98  to a "YYYY, MMMM" format using: 

   #DateFormat(left(myVar, len(myVar) - 2) & " 1, "
      & right(myVar,2), "yyyy, mmmm")#
 
Title: Evaluate() and CFIF
Date: 04/30/03      9 Posts
Summary: In a list loop over FORM.fieldnames, you can skip a block of code where the fieldname is an empty string by using <cfif len(trim(form[i]))>. Array syntax is suggested as a replacement for Evaluate(). A brief tutorial that compares structures to arrays is included.
 
Title: Handling MS Word "Smart Quotes"
Date: 04/30/03      12 Posts
Summary: Scrub "smart quotes" from data that has been cut from a Word document by replacing the offending characters with their ASCII decimal equivalents. But if your application and database are configured to handle the Unicode character set, "smart quotes" shouldn't be a problem.
Related: 8000+ ASCII Range?
 
Title: MIME Type of Image/pjpeg?
Date: 04/30/03      12 Posts
Summary: PJPEG stands for "progressive JPEG" and uses a distinct "image/jpeg" MIME type. You can specify multiple acceptable file types in CFFILE by providing a comma-delimited list of MIME types.
 
Title: The evils of Evaulate()
Date: 04/30/03      13 Posts
Summary: Evaluate() is generally used to determine the value of a dynamic variable name, so you don't need to apply it to a mathematical expression like this:

#url.StartSearch + (getTickets.RecordCount - 1)#

And although CFMX supports the direct CFOUTPUT of this type of expression, CF 5 developers will need to use the following method to output:

<CFSET num = url.StartSearch + getTickets.Recount -1> <CFOUTPUT>#num#</CFOUTPUT>

 

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