Mathematician, programmer, and researcher; with interests in algorithmic design, software engineering theory, and massively parallel computing. I'm also a keyboard junkie and an aspiring language nerd.
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What's the point of map in Haskell, when there is fmap? added 130 characters in body |
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Call a Hash value with a variable - Ruby edited body |
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answered | Call a Hash value with a variable - Ruby |
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awarded | Popular Question |
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awarded | Popular Question |
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awarded | Nice Question |
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accepted | What's a good way to store this relation so I can answer queries of this form efficiently? |
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awarded | Popular Question |
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accepted | Revert to default completion mode |
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asked | Revert to default completion mode |
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How can I send an HTTP PUT request in Ruby? @finiteloop: send_request takes a third parameter for the data you're 'PUT'ing
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accepted | Configure Software Update to use a SOCKS5 proxy |
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awarded | Supporter |
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awarded | Autobiographer |
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asked | Configure Software Update to use a SOCKS5 proxy |
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What's a good way to store this relation so I can answer queries of this form efficiently? added 8 characters in body |
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What's a good way to store this relation so I can answer queries of this form efficiently? deleted 14 characters in body |
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What's a good way to store this relation so I can answer queries of this form efficiently? Gordon Linoff: Your marketing department is curious about customer shopping habits as they correspond with the calendar, and would like to be able to search the purchase records with queries like "Find me all the customers that: (made a purchase in December) AND ((made a purchase in July) OR (made a purchase in February))". X is your set of customers, Y is your set of sale dates, and ℜ is your set of purchases. Better? |
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What's a good way to store this relation so I can answer queries of this form efficiently? paxdiablo: it's actually work, I just rephrased it to get rid of all the context of what exactly X and Y are, since they're overly specific to my job. Consider if you have an arbitrary boolean combination of value ranges, e.g. "find me all x that (have a y in [0,10]) AND ((have a y in [11,20]) OR (have a y in [31,40]))". Does that sound more real world to you? :) |
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What's a good way to store this relation so I can answer queries of this form efficiently? added 46 characters in body |
