Railo 4.2 Reference
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Object Method Array.map

Calls the given closure with every element in the given array.       the function returns a array that contains all values returned by the closure.
Array.map(function closure,[boolean parallel,[number maxThreads]]):array

Arguments

The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
closure function  Yes filter can be a function/closure that implements the following constructor [function(any value[, number index, array array]):any].
parallel boolean  No execute closures parallel
maxThreads number  No maximum number of threads executed, ignored when argument "parallel" is set to false