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C++ unordered_map using a custom class type as the key

... Compute individual hash values for first, second and third // http://stackoverflow.com/a/1646913/126995 size_t res = 17; res = res * 31 + hash<string>()( k.first ); res = res * 31 + hash<string>()( k.second ); res = res * 31 + ...
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When exactly is it leak safe to use (anonymous) inner classes?

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Is there any haskell function to concatenate list with separator?

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How to export table as CSV with headings on Postgresql?

... COPY products_273 TO '/tmp/products_199.csv' WITH (FORMAT CSV, HEADER); as described in the manual. share | improve this answer ...
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How do I access command line arguments in Python?

...a small example: import argparse parser = argparse.ArgumentParser("simple_example") parser.add_argument("counter", help="An integer will be increased by 1 and printed.", type=int) args = parser.parse_args() print(args.counter + 1) and the output for python prog.py -h usage: simple_example [-h] ...
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When do items in HTML5 local storage expire?

... localStorage.removeItem(name); localStorage.removeItem(name + '_expiresIn'); } catch(e) { console.log('removeStorage: Error removing key ['+ key + '] from localStorage: ' + JSON.stringify(e) ); return false; } return true; } /* getStorage: retrieves a key fro...
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How to sort my paws?

...l repository with full, stand-alone code. You can clone it with hg clone https://joferkington@bitbucket.org/joferkington/paw-analysis Overview There are essentially two ways to approach the problem, as you noted in your question. I'm actually going to use both in different ways. Use the (tem...
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Django filter versus get for single object?

...vice seems to indicate it's the call made for this scenario. stackoverflow.com/questions/5123839/… – NeilG Aug 9 '19 at 3:31 ...
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dispatch_after - GCD in Swift?

...r(delayTime, dispatch_get_main_queue()) { print("test") } EDIT: I recommend using @matt's really nice delay function. EDIT 2: In Swift 3, there will be new wrappers for GCD. See here: https://github.com/apple/swift-evolution/blob/master/proposals/0088-libdispatch-for-swift3.md The original...
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Using NSPredicate to filter an NSArray based on NSDictionary keys

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