> Use a hash when you want to access data by a key. > >> (like "if you have over 500,000 items, use a 2-d >> array instead of a hash") > > Perl doesn't have 2-d arrays.
Sure it does, it just takes a little more work to implement them. =) > If you have 500,000 of something, that gets in to > the realm of "a lot". A database may be the best > answer. Or not. It depends... So about how many keys do you have to have before you start questioning whether you should be using a hash? Is 15,000 keys too many? I've got lots of data files with 15000+ x,y,z values. The x,y values are the same, but the z's are different between the files. I want to output only data points where ALL the z's in all files for a given x,y are greater than 0. Should I load the x,y values as hash keys, and the max z values as the "value"? I'm a little vague on how to proceed... TIA. - B -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
