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What are C++ functors and their uses?

...about functors in C++. Can someone give me an overview as to what they are and in what cases they would be useful? 14 Answe...
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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?

...le if property names have been changed, migrations have not been performed and as a result the SaveChanges(); fails and cannot occur due to the change. – Oracular Man Feb 25 '18 at 18:46 ...
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When should you NOT use a Rules Engine? [closed]

...s when I see people using very large rule sets (e.g., on the order of thousands of rules in a single rule set). This often happens when the rules engine is a singleton sitting in the center of the enterprise in the hope that keeping rules DRY will make them accessible to many apps that require them...
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Scala constructor overload?

...ary Constructors in Scala must either call the primary constructor (as in landon9720's) answer, or another auxiliary constructor from the same class, as their first action. They cannot simply call the superclass's constructor explicitly or implicitly as they can in Java. This ensures that the primar...
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WPF Data Binding and Validation Rules Best Practices

...plex.com), which includes a demo of best practices validation in WPF+MVVM, and uses IDataErrorInfo – Mark Heath Sep 4 '09 at 6:37 3 ...
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convert String to DateTime

... DateTime.strptime allows you to specify the format and convert a String to a DateTime. share | improve this answer | follow | ...
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How to provide animation when calling another activity in Android?

I have two Activities A and B. I want to have the shrink Animation when Activity A calls B and maximize animation when Activity B calls A. I don't need the animation xml files for this. ...
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How to check existence of user-define table type in SQL Server 2008?

... IF EXISTS (SELECT * FROM sys.types WHERE is_table_type = 1 AND name = 'MyType') --stuff sys.types... they aren't schema-scoped objects so won't be in sys.objects Update, Mar 2013 You can use TYPE_ID too ...
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Class JavaLaunchHelper is implemented in both. One of the two will be used. Which one is undefined [

...- the JDK is still broken. The bug report claims that the error is benign and should not cause any run-time problems, though one of the comments disagrees with that. In my own experience, I have been able to work without any problems using JDK 1.7.0_60 despite seeing the message. If this issue is ...
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Xcode + remove all breakpoints

...+6, in Xcode3 press CMD(⌘)+ALT+B. Select all breakpoints with CMD(⌘)+A and delete them, like deleting text, with backspace. There's no step 3 :) share | improve this answer | ...