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ASP.NET MVC: No parameterless constructor defined for this object

...r some other people that come here: if you have just Tuples (like Tuple<string, string> data; ) in your class, serialization will be ok (because I encountered this prob during JSON serialization)... but if you use something like List<Tuple<string, string>> data; you'll start having...
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count vs length vs size in a collection

... Length() tends to refer to contiguous elements - a string has a length for example. Count() tends to refer to the number of elements in a looser collection. Size() tends to refer to the size of the collection, often this can be different from the length in cases like vect...
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“The given path's format is not supported.”

...ombine instead: Path.Combine(str_uploadpath, fileName); which returns a string. share | improve this answer | follow | ...
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How to randomize two ArrayLists in the same fashion?

... a single array or List of those objects. public class Data { private String txtFileName; private String imgFileName; // Add/generate c'tor, getter/setter, equals, hashCode and other boilerplate. } Usage example: List<Data> list = new ArrayList<Data>(); list.add(new Data...
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Check if Key Exists in NameValueCollection

...key is not found; So you can just: NameValueCollection collection = ... string value = collection[key]; if (value == null) // key doesn't exist 2) if the specified key is found and its associated value is null. collection[key] calls base.Get() then base.FindEntry() which internally uses ...
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With Spring can I make an optional path variable?

...tBean typedTestBean( HttpServletRequest req, @PathVariable String type, @RequestParam("track") String track) { return getTestBean(type); } @RequestMapping(value = "/json", method = RequestMethod.GET) public @ResponseBody TestBean testBean( HttpServletRequest req,...
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How to keep environment variables when using sudo

...le by a feature of the bash builtin printf. The %q produces a shell quoted string. Unlike the parameter expansion in bash 4.4, this works in bash versions < 4.0 share | improve this answer ...
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Converting string “true” / “false” to boolean value [duplicate]

I have a JavaScript string containing "true" or "false" . 3 Answers 3 ...
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Remove HTML Tags from an NSString on the iPhone

There are a couple of different ways to remove HTML tags from an NSString in Cocoa . 22 Answers ...
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How to initialise a string from NSData in Swift

I have been trying to initialise a string from NSData in Swift. 7 Answers 7 ...