574
Chapter 3: ColdFusion Functions
ListGetAt
Description
Gets a list element at a specified position.
Returns
Index of the list element at position
position
.
Category
List functions
Function syntax
ListGetAt
(
list
,
position
[,
delimiters
])
See also
ListFirst
,
ListLast
,
ListQualify
,
ListSetAt
Parameters
Usage
If you use list functions on strings that are delimited by a delimiter character and a space, a
returned list element might contain a leading space; you use the
trim
function to remove such
spaces from a returned element. For example, consider this list:
<cfset myList = "one hundred, two hundred, three hundred">
To get a value from this list, use the
trim
function to remove the space before the returned value:
<cfset MyValue = #trim(listGetAt(myList, 2))#>
With this usage,
MyValue
= "
two hundred
", not "
two hundred
", and spaces within a list
element are preserved.
ColdFusion ignores empty list elements; thus, the list "a,b,c,,,d" has four elements.
Example
<h3>ListGetAt Example</h3>
<!--- Find a list of users who wrote messages --->
<cfquery name = "GetMessageUser" datasource = "cfsnippets">
SELECT Username, Subject, Posted
FROM Messages
</cfquery>
<cfset temp = ValueList(GetMessageUser.Username)>
<!--- loop through the list and show it with ListGetAt --->
<h3>This list of usernames who have posted messages numbers
<cfoutput>#ListLen(temp)#</cfoutput> users.</h3>
<ul>
Parameter
Description
list
A list or a variable that contains one.
position
A positive integer or a variable that contains one. Position at which to get element.
The first list position is 1.
delimiters
A string or a variable that contains one. Character(s) that separate list elements.
Default: comma.
If this parameter contains more than one character, ColdFusion processes each
occurrence of each character as a delimiter.
Summary of Contents for COLDFUSION MX 61-CFML
Page 1: ...CFML Reference...
Page 16: ...16 Contents...
Page 32: ...32 Chapter 1 Reserved Words and Variables...
Page 160: ...160 Chapter 2 ColdFusion Tags html...
Page 245: ...cfmail 245 p input type Submit name form...
Page 299: ...cfreturn 299 cffunction cfcomponent...
Page 354: ...354 Chapter 2 ColdFusion Tags cfoutput cfcatch cftry...
Page 357: ...cfupdate 357 cftable cfif body html...
Page 362: ...362 Chapter 2 ColdFusion Tags cfloop MyDoc cfxml cfdump var MyDoc...
Page 397: ...ASin 397 br input type Text name sinNum size 25 p input type Submit name input type RESET form...
Page 486: ...486 Chapter 3 ColdFusion Functions input type Submit NAME form...
Page 492: ...492 Chapter 3 ColdFusion Functions b http_content x content b cfoutput...
Page 504: ...504 Chapter 3 ColdFusion Functions tr table form...
Page 519: ...IIf 519 cfoutput b...
Page 534: ...534 Chapter 3 ColdFusion Functions input type Submit name form...
Page 542: ...542 Chapter 3 ColdFusion Functions cfif cfif...
Page 547: ...IsStruct 547 cfcase cfswitch...
Page 550: ...550 Chapter 3 ColdFusion Functions IsWDDX returns IsWDDX packet br cfoutput...
Page 559: ...Left 559 option value 9 9 select input type Submit name Remove characters form...
Page 620: ...620 Chapter 3 ColdFusion Functions cfoutput cfloop...
Page 681: ...SetVariable 681 p Your variable varName p The value of varName is varNameValue cfoutput cfif...
Page 724: ...724 Chapter 3 ColdFusion Functions cfelse h3 Conversion error h3 cfif...
Page 743: ...XmlNew 743 cfscript cfdump var MyDoc...
Page 786: ...786 Chapter 5 ColdFusion Java CFX Reference...
Page 798: ...798 Chapter 6 WDDX JavaScript Objects...
Page 806: ...806 Chapter 7 ColdFusion ActionScript Functions...