ColdFusion 9 introduces a new operator called ternary operator. Unlike iif(), ternary operator looks cleaner and less confusing.
See the snippet below. Pay attention on the quotes.
<cfparam name="condition" default="true">
<cfset var_1 = "TRUE">
<cfset var_2 = "FALSE">
<cfoutput>
<!--- Use de() and quote will not evaluate the variable --->
immediate if: #iif( (condition), de('var_1'), de('var_2') )#
<br />
<!--- Use quote 'var_1' or de(var_1) will evaluate the variable --->
immediate if: #iif( (condition), 'var_1', 'var_2' )#
<br />
<!--- Use quote 'var_1' will not evaluate the variable --->
ternary operator: #( (condition) ? 'var_1' : 'var_2' )#
<br />
<--- No quote var_1 will evaluate the variable --->
ternary operator: #( (condition) ? var_1 : var_2 )#
</cfoutput>
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