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ArrayMax
Last update:
May 18, 2026
Note:
You can also set the maximum thread count in ColdFusion Administrator. Click Server Settings > Settings and specify the number of threads in Default Maximum Thread Count For Parallel Functions .
Description
Array maximum function.
Returns
The largest numeric value in an array. If the array parameter value is an empty array, returns zero.
Category
HISTORY
ColdFusion (2021 release): Introduced the following parameters:
- parallel
- maxThreadCount
Function syntax
arrayMax(array [, parallel] [, maxThreadCount]) |
Parameters
Parameter | Description |
array | Name of an array |
parallel | True if you want to enable parallel programming. |
maxThreadCount | The number of threads the function can execute. The number of threads must be between 1-50. If the value exceeds 50, there is an exception. |
Example
<cfscript>
myArray=[23,76,1,-43,9,112]
maxVal=ArrayMax(myArray)
WriteOutput(maxVal)// Returns 112
</cfscript>Using parallelization
<cfscript>
for(i=1;i<=1001;i++){
arr[i] = i*2;
if(i == 554)
arr[i]= 2147483648
}
//writedump(arr)
//writeoutput(arr.max())
t_start=GetTickCount()
writeoutput(arraymax(arr,true,5))
t_end=GetTickCount()
writeoutput("<br>Time taken with 5 threads:" & t_end-t_start)
t_start=GetTickCount()
writeoutput(arr.max(true,10))
t_end=GetTickCount()
writeoutput("<br>Time taken with 10 threads:" & t_end-t_start)
t_start=GetTickCount()
writeoutput(arraymax(array=arr,parallel=true,maxthreadcount=20))
t_end=GetTickCount()
writeoutput("<br>Time taken with 20 threads:" & t_end-t_start)
t_start=GetTickCount()
writeoutput(arr.max())
t_end=GetTickCount()
writeoutput("<br>Time taken with no parallel:" & t_end-t_start)
</cfscript>
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