Take a look for Jon, et al.'s, Redbook, Who Knew You Could Do That With RPG? - it has examples of qsort() and bsearch() - was written before the XML stuff was added to RPG but will likely help understand those better, too.

On 10/15/2012 4:29 PM, Jon Paris wrote:
Callback is used natively in RPG for XML-SAX and for XML-INTO when used with %handler. It is also used with the qsort() and bsearch() APIs which are quite commonly used from RPG.

That's just to quote four examples.

On 2012-10-15, at 5:19 PM, midrange-l-request@xxxxxxxxxxxx wrote:

Has anyone ever heard of a callback as it is related to the IBM i? ?I was asked to explain a callback during an interview and I'd never even heard of it. ? Can any of you explain to me what a callback is and how it is used? ?I tried google but didn't get a good explanation.
Jon Paris


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