In ColdFusion 8 one can use shortcuts to refer to three boolean operators: NOT, AND, OR
NOT can also be used to as !
AND can also be used as &&
OR can also be used as ||
<cfset x = 10>
<cfset y = 30>
<cfoutput>
x = #x#<br/>
y = #y#
</cfoutput>
<!--- Reverse the value of an argument. For example, NOT True is False and vice versa. --->
<p><strong>Using NOT or !:</strong> Testing for !x eq y </p>
<cfif !x eq y>
x is not equal to y
<cfelse>
x is equal to y
</cfif>
<p><strong>Using AND or &&</strong>: Testing for x eq 10 && y eq 30</p>
<!--- Return True if both arguments are True; return False otherwise. For example, True AND True is True, but True AND False is False. --->
<cfif x eq 10 && y eq 30>
x is equal to y
<cfelse>
x is not equal to y
</cfif>
<p><strong>Using OR or ||</strong>: Testing for x eq 10 || y eq 20</p>
<!--- Return True if any of the arguments is True; return False otherwise. For example, True OR False is True, but False OR False is False. --->
<cfif x eq 10 || y eq 20>
One of the values is true
<cfelse>
None of the values are true
</cfif>
This code yields the following output.
=======Start output=======
x = 10
y = 30
Using NOT or !: Testing for !x eq y
x is not equal to y
Using AND or &&: Testing for x eq 10 && y eq 30
x is equal to y
Using OR or ||: Testing for x eq 10 || y eq 20
One of the values is true
=======End output=======
The other boolean operators — XOR, EQV, IMP — continue to work as before.
More information on boolean operators in ColdFusion 8 is at Adobe ColdFusion 8 Livedocs.
It looks kind of strange because you use them both.
<cfif x eq 10 && y eq 30>
x is equal to y
<cfelse>
x is not equal to y
</cfif>
Why not use:
<cfif x == 10 && y == 30>
x is equal to y
<cfelse>
x is not equal to y
</cfif>
and:
<cfif x != y>
x is not equal to y
<cfelse>
x is equal to y
</cfif>