Higher-Order Perl Full-Text Search

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236...Clearly, the recursive call here is a tail call. Applying the usual tail-call optimiza-...
240...Here the recursive call isn't in the tail position. The return value from the recursive...
242...The original function had two recursive calls, one of which was a tail call, and...
253...us a detailed look into what is really required to implement recursive calls. Many...
259...making a recursive call to construct the tail of the list, it defers the recursive call...
260...recursive; it returns immediately. A later call to tail() may call it again, but...
275...tail($h) at the end of the argument list in the recursive call, so that a different...
276...mations of the tails of S and T. The last one is a recursive call to the concat()...

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