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Re^2: Array vs. Hash for sparsely integer-indexed databy BrowserUk (Patriarch) |
on Jan 25, 2013 at 21:48 UTC ( [id://1015415]=note: print w/replies, xml ) | Need Help?? |
Also not to be excluded entirely is ... uhh ... an array of integers that is searched sequentially each time. That is a surprise winner for my 'Worst Advice of the Month (January, 2013)' prize. ... set up a few short test-runs ... I'd suggest you take your own advice before doling it out to others. NB: The following uses 1/10 the number of values and 1/10 the number of lookups than the tests above for arrays, hashes and bit vectors, because it takes so long to complete.:
Using that as the basis for estimation, the total size will be 3.2MB -- 12 times that required by the bitvector solution. And the lookups that took hashes 1 second; arrays 2/5ths of a second and bitvectors 1/3rd of a second; would take: 25 days! It is really hard to see any circumstance when this would be a viable solution. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
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