Parameter
上次更新時間
2022年1月11日
Description
Iterates over every entry of the array and calls the closure to work on the elements of the array. This function will reduce the array to a single value from the right to the left and will return the value.
Returns
Any
Syntax
ArrayReduceRight(array, function(result, item, [,index, array])[, initialValue])
History
ColdFusion (2021 release): Added this function.
Parameters
|
|
Required/Optional |
Description |
|---|---|---|
|
array |
Required |
The input array. |
|
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. |
Example 1
<cfscript>
data = ['1','2','3','4','5','6'];
stringConcat = ArrayReduceRight(data,function(previous,next) {
return previous & next;
},"");
writeOutput(stringConcat)
</cfscript>
Output
654321
Example 2
<cfscript>
data=[3,5,7,9,11]
result=ArrayReduceRight(data,function(previous,next){
return previous & next
},"")
writeDump(result)
</cfscript>
Output
119753
Example 3- member function
<cfscript>
data=[3,5,7,9,11]
result=data.ReduceRight(function(previous,next){
return previous & next
},"")
writeDump(result)
</cfscript>
Output
119753