Closures in ColdFusion: Structures/Collections

Railo 4 supports closures (a.k.a. anonymous functions) in ColdFusion.

I’ve been playing with the different ways of using them in the various apps I am building at Straker Translations.

Today there was a need to loop over the keys of a structure (a.k.a. associative arrays) and add the value of all the keys.

The usual idiom of regular ColdFusion code would be to use <cfloop> to go over all the keys and do the addition.

With Railo closures it is much simpler. Here is the code:

It is simple and elegant. Makes the code much more succinct and powerful.

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