Description
Iterates over each item of the list and calls the closure to work on the item. This function will reduce the list to a single value and will return the value.
Returns
any
ListReduce(list, function(result, item [,index, list]) [,initialValue, delimiter, includeEmptyFields])
History
ColdFusion 11: Added this function.
Attributes
Attribute |
Req/Opt |
Default |
Description |
|---|---|---|---|
| list | Required | The input list. | |
| function | Required | Closure or a function reference that will be called for each of the iteration. The arguments passed to the callback are
|
|
| initialValue | Optional | Initial value which will be used for the reduce operation. The type is any. | |
| delimter | Optional | comma (,) | The list delimiter The type is string.. |
| includeEmptyFields | Optional | false | Include empty values. The type is boolean. |
Example
<cfscript>
list = "red, blue, green, yellow";
ucaseList = listMap(list, function(item)
{
return ucase(item);
});
writeDump(ucaseList);
writeOutput("<br>");
concatValues = listReduce(list, function(result, item, index, mylist, delimiter)
{
result = result?:"";
if(index == 1)
delimiter = "";
result&= delimiter & item;
return result;
});
writeDump(concatValues);
</cfscript>
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