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On Sun, Nov 2, 2014 at 6:29 PM, Stuart Yeates <[log in to unmask]> wrote: > Do any of these have built-in indexing? 800k records isn't going to fit in > memory and if building my own MARC indexer is 'relatively straightforward' > then you're a better coder than I am. > > Unless I'm missing something, this task is easier than it sounds. Since you are interested in only a small part of the record, the memory requirements are quite modest so you can absolutely fit it all into memory while processing the file one line at a time. If I understand your problem correctly, a hash of arrays or objects would make short work of this. One handy programming reference for people who need syntax for a variety of commonly used tasks (i.e. practically everything you would normally need) in more than 30 languages is PLEAC (Programming Language Examples Alike Cookbook) http://pleac.sourceforge.net/ kyle