TryCF Gist

trycf-gist-1649350591372-e8aaa8a9-67ef-1d2b-28e9-231d66497a45.cfm

<cfscript>

array function f(required array a) {
    local.setInFunction = true
    local.remappedArray = a.map((v) => v, true, 5)
    
    local.sortedArray = local.remappedArray.sort((e1, e2) => {
        local.setInSortCallBack = true
        return e2 - e1
    })
    writeOutput("setInFunction should exist: " & local.keyExists("setInFunction") & "<br>") // CF returns false
    writeOutput("setInSortCallBack should NOT exist: " & local.keyExists("setInSortCallBack") & "<br>") // CF returns true
    writeDump(local) // it's the local from the sort callback, not this function!
    
    return local.sortedArray
}


a = [4,3,2,1]

result = f(a)
writeDump(result)
</cfscript>