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Sort points in clockwise order?

...ting alternative approach to your problem would be to find the approximate minimum to the Traveling Salesman Problem (TSP), ie. the shortest route linking all your points. If your points form a convex shape, it should be the right solution, otherwise, it should still look good (a "solid" shape can b...
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How to map a composite key with JPA and Hibernate?

... wheel and use as many tools available as possible to reduce coding to the minimum and most important part, what you intent to do. share | improve this answer | follow ...
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What should every developer know about databases? [closed]

... and just have to write some queries, it's still vital to understand, at a minimum: What's indexed in your database and what's not: The difference between types of scans, how they're chosen, and how the way you write a query can influence that choice; The concept of coverage (why you shouldn't jus...
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What are all the user accounts for IIS/ASP.NET and how do they differ?

...ccount is a built-in account used by the service control manager. It has a minimum set of privileges on the local computer. It has a fairly limited scope of use: LocalService Account LOCAL SYSTEM: You didn't ask about this one but I'm adding for completeness. This is a local built-in account....
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Setting PayPal return URL and making it auto return?

...able IPN process, via 'notify_url', processing the 'Completed' status at a minimum (assume anything else is a fail, perhaps requiring manual negotiation). Your PDT and IPN server processing will need to ensure that the order is only filled once. – Patanjali Mar...
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Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]

...for the pay as you go plan or else you lose unused credits. So that's like minimum of spending 1 credit /1 hour every 60 days. One last comment for now, from my evaluation, you'll need high bandwidth to use the service effectively. It's usable over 1.5 Mbps DSL but kind of slow in response. You'd w...
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How does database indexing work? [closed]

...n be done when the data is unique, am i right? although you mentioned that minimum cardinality is important, the algorithm wouldn't be a simple binary search, how would this approximation (~log2 n) affect the process time? – shampoo Feb 3 '13 at 10:20 ...
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What is Unicode, UTF-8, UTF-16?

...fficial report is massive, I suggest reading the following: The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) An introduction by Joel Spolsky, Stack Exchange CEO. To the BMP and beyond! A tutorial by Eric Muller, Technical...
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What are the mechanics of short string optimization in libc++?

...move during a move construction or move assignment. The long form needs a minimum of 3 words to store the data pointer, size and capacity. Therefore I restricted the short form to those same 3 words. It has been suggested that a 4 word sizeof might have better performance. I have not tested that...
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Read an Excel file directly from a R script

...titive and gdata a clear loser. Taking each measure relative to the column minimum: # expr min lq mean median uq max # 1 xlsx 1.59 1.62 1.62 1.63 1.63 1.65 # 2 openxlsx 1.17 1.16 1.15 1.16 1.14 1.19 # 3 readxl 1.00 1.00 1.00 1.00 1.00 1.00 # 4 gdata 16...