determining empty string 1

[imstillatwork]

what way is "better" (more standard, faster, more reliable, etc..)

<cfif NOT varString EQ &quot;&quot;>

OR

<cfif len(varString)>

??

Thanks just curious

 

[Sarky78]

For string comparisons MM are recomending this:

<CFIF CompareNoCase(varString, &quot;&quot EQ 0>
empty string
<CFELSE>
something in the string
</CFIF>

A lot more code on the page than a Len(varString) GT 0 but apparently its faster.

if you want to do multiple compares they suggest this:

<CFSET a = CompareNoCase(varString,&quot;&quot>

<CFSWITCH EXPRESSION=&quot;#variables.a#&quot;>
<CFCASE VALUE=&quot;1&quot;>
do something
</CFCASE>
<CFCASE VALUE=&quot;0&quot;>
do something else
</CFCASE>

<CFCASE VALUE=&quot;-1&quot;>
do something complatly diffeent
</CFCASE>
</CFSWITCH>

hope this helps!

Tony

 

[csteinhilber]

Actually, if you're just checking for NULL values, Macromedia recommends using the Len() technique:

<CFIF Len(Trim(varString)) GT 0>
        :

See

http://www.macromedia.com/devnet/mx/blueprint/articles/cfbp.html#performance

-Carl

 

[imstillatwork]

thank you both.

 

[Sarky78]

Sorry, Carl is right really should read the whole article instead of just skim reading.

Tony