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ListFirst
DescriptionGets
the first element of a list.
ReturnsThe
first element of a list. If the list is empty, returns an empty
string.
Function syntaxListFirst(list [, delimiters, includeEmptyValues ])
Parameters
Parameter
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Description
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includeEmptyValues
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Optional. Set to yes to
include empty values.
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list
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A list or a variable that contains a list.
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delimiters
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A string or a variable that contains one.
Characters that separate list elements. The default value is comma.
If
this parameter contains more than one character, ColdFusion processes
each occurrence of each character as a delimiter.
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UsageColdFusion
ignores empty list elements; thus, the list "a,b,c,,,d" has four
elements.
Example<h3>ListFirst Example</h3>
<!--- Find a list of users who wrote messages --->
<cfquery name = "GetMessageUser" datasource = "cfdocexamples">
SELECT Username, Subject, Posted
FROMMessages
</cfquery>
<cfset temp = ValueList(GetMessageUser.Username)>
<p>Before editing the list, it is:
<cfoutput>#ValueList(GetMessageUser.Username)#</cfoutput>.
<p>(Users who posted more than once are listed more than once.)
<!--- Show the first user in the list --->
<p>The first user in the list is:
<cfoutput>#ListFirst(temp)#</cfoutput>
<p>The rest of the list is: <cfoutput>#ListRest(temp)#</cfoutput>.
<p>(Users who posted more than once are listed more than once.)
<p>The last user in the list is: <cfoutput>#ListLast(temp)#</cfoutput>
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