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What effect(s) can the virtual keyword have in Entity Framework 4.1 POCO Code First?

...llections will be lazy-loaded unless you specifically mark them otherwise. More efficient change tracking. If you meet all the following requirements then your change tracking can use a more efficient method by hooking your virtual properties. From the link: To get change tracking proxies, the...
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Array.Add vs +=

...e write-operation $arr.Count 5 If that's not possible, consider using a more efficient collection like List or ArrayList (see the other answer). share | improve this answer | ...
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MassAssignmentException in Laravel

...w your logic. If you agree, you might as well change your own answer, even more so because it is becoming a reference topic. The answer you have suggested will indeed work, but isn't in compliance with the Laravel convention. – Pascalculator Apr 12 '15 at 11:41...
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Java Generics Wildcarding With Multiple Classes

...Type Parameters section, at the bottom of the page. You can actually list more than one interface if you wish, using & InterfaceName for each one that you need. This can get arbitrarily complicated. To demonstrate, see the JavaDoc declaration of Collections#max, which (wrapped onto two lines)...
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Removing duplicates from a list of lists

...pushing the boundaries of performance limits) one may need to go into much more detail, providing probability distributions, deciding which performance measures to optimize (maybe the upper bound or the 90th centile is more important than an average or median, depending on one's apps), performing po...
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Python 3.x rounding behavior

...an be significant. The Python 3.0 approach eliminates this issue. There is more than one method of rounding in common use. IEEE 754, the international standard for floating-point math, defines five different rounding methods (the one used by Python 3.0 is the default). And there are others. This beh...
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.NET String.Format() to add commas in thousands place for a number

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What is the C++ function to raise a number to a power?

... pow() in the cmath library. More info here. Don't forget to put #include<cmath> at the top of the file. share | improve this answer | ...
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How do I find and view a TFS changeset by comment text?

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YAML current date in rmarkdown

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