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Most efficient method to groupby on an array of objects

... return item.Task + " (" + item.Value + ")"; }).join(", ")}); }); then calling DataGrouper.tasks(data, ["Phase", "Step"]) will get you [ {Phase: "Phase 1", Step: "Step 1", Tasks: "Task 1 (5), Task 2 (10)"}, {Phase: "Phase 1", Step: "Step 2", Tasks: "Task 1 (15), Task 2 (20)"}, ...
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]

... We had to return rather large result sets (think hundreds of results) and then aggregate them ourselves since Solr aggregation was lacking. The amount of time to serialize to and from XML just absolutely killed performance. For small results sets though, it was perfectly fine. Best documentation I'...
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How much is too much with C++11 auto keyword?

...is case. So if the auto keyword improves readability in a particular case then use it. You can write auto when it is obvious to the reader what type auto represents. Here are some examples: auto foo = std::make_shared<Foo>(); // obvious auto foo = bla(); // unclear. do...
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What is the difference between a static and a non-static initialization code block

...static context". If you also remove static from the initializer block, it then becomes an instance initializer and so int a is initialized at construction. share | improve this answer | ...
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Why should I implement ICloneable in c#?

...ch could not. If the base type itself exposed a public cloning interface, then any derivative type which could not be cloned would violate the Liskov Substitution Principle. The way to avoid this problem is to have the base type support cloning using a Protected method, and allow derived types to ...
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Overloaded method selection based on the parameter's real type

..."foo(Object o)"); } If you have many types and this is unmanageable, then method overloading is probably not the right approach, rather the public method should just take Object and implement some kind of strategy pattern to delegate the appropriate handling per object type. ...
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How to make a class property? [duplicate]

... If you define classproperty as follows, then your example works exactly as you requested. class classproperty(object): def __init__(self, f): self.f = f def __get__(self, obj, owner): return self.f(owner) The caveat is that you can't use ...
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Rails how to run rake task

...ou want to run all the tasks at once make task :all => [:a, :b, :c] and then run rake reklamer:all – Spike Gronim Apr 12 '11 at 21:37 ...
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What's the Point of Multiple Redis Databases?

...ow to structure your data rather than store it the way you think works and then working around how to access and mince it later. You will see far better performance and find the data consuming code often is much cleaner and simpler. Regarding single threaded, consider that redis is designed for sp...
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How long is the SHA256 hash?

... If you think you might want to block a user in the future, then I suggest using varchar(65) for a leading !... just saying. – Manatax Mar 9 '14 at 21:42 110 ...