– Common Function Library Project

arrayCompact(arr[, delim])

Last updated March 02, 2007


M Gillespie for HOUCFUG

Version: 1 | Requires: CF6 | Library: DataManipulationLib

This function is designed to remove undefined postions from an array. Will not work in CF5, and would not recommend using it for large arrays. Optional argument to pass in delimiter (default is Pipe symbol).

Return Values:
Returns an array.


<!--- create the array --->
<cfset tmp=arraynew(1)>
<cfset tmp[1]="a">
<cfset tmp[3]="c">
<cfset tmp[4]="d">
<!--- let's see it in all it's un-glory --->
<cfdump var="#tmp#" label="original array">
<!--- compacting - grindgrindgrind --->
<cfset newTmp=arrayCompact(tmp)>
<!--- show me --->
<cfdump var="#Newtmp#" label="New Compacted array">
<!--- now, the pudding --->
Looping new Array<br />
<cfloop from="1" to="#arraylen(newTmp)#" index="i">
index #i# = #newTmp[i]#<br />


Name Description Required
arr Array to compact. Yes
delim Temporary list delimiter. Defaults to |. No

Full UDF Source:

 * Used to remove missing positions from an array.
 * @param arr      Array to compact. (Required)
 * @param delim      Temporary list delimiter. Defaults to |. (Optional)
 * @return Returns an array. 
 * @author M Gillespie for HOUCFUG ( 
 * @version 1, March 2, 2007 
function arrayCompact(arr) {
    var delim="|";
    if(arraylen(arguments) gt 1) {delim=arguments[2];}
    return listtoarray(arraytolist(arr,delim),delim);


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