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What is copy-on-write?

...gy used in computer programming. The fundamental idea is that if multiple callers ask for resources which are initially indistinguishable, you can give them pointers to the same resource. This function can be maintained until a caller tries to modify its "copy" of the resource, at which point a true...
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How to create a DataTable in C# and how to add rows?

...ma/structure, do: dt.WriteXMLSchema("dtSchemaOrStructure.xml"); Additionally, you can also export your data: dt.WriteXML("dtDataxml"); share | improve this answer | foll...
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How do I check if a number evaluates to infinity?

...ine but it won't be so obvious to maintainers of your code what you're actually trying to test for. I agree that using isFinite is almost always the better way to do things -- that's why I mentioned it in my answer -- but only the OP can decide whether it meets their requirements. ...
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How to write iOS app purely in C

...d in remain the same whether or not // you are using VA_ARGS. This is actually the basis of the objective-c // runtime (objc_msgSend), so we are probably fine here, this would be // the last thing I would expect to break. extern int UIApplicationMain(int, ...); // Entry point of the application....
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Delete/Reset all entries in Core Data?

Do you know of any way to delete all of the entries stored in Core Data? My schema should stay the same; I just want to reset it to blank. ...
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How to solve PHP error 'Notice: Array to string conversion in…'

...n $_POST['C']. So when you echo that, you are trying to print an array, so all it does is print Array and a notice. To print properly an array, you either loop through it and echo each element, or you can use print_r. Alternatively, if you don't know if it's an array or a string or whatever, you c...
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iOS 7 status bar back to iOS 6 default style in iPhone app?

...clear background. Status bar appearance is controlled along one of two mutually-exclusive basis paths: you can either set them programmatically in the traditional manner, or UIKit will update the appearance for you based on some new properties of UIViewController. The latter option is on by default....
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C# binary literals

... @Dai that’s no different than hex literals. In other words, all constants are big endian, but stored little endian on Intel/AMD and most ARMs. 0xDEADBEEF will be stored as 0xEF 0xBE 0xAD 0xDE – Cole Johnson Sep 2 '19 at 18:28 ...
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What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]

The sample code below occurred naturally. Suddenly my code thew a very nasty-sounding FatalExecutionEngineError exception. I spent a good 30 minutes trying to isolate and minimize the culprit sample. Compile this using Visual Studio 2012 as a console app: ...
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.NET NewtonSoft JSON deserialize map to a different property name

... Json.NET has a JsonPropertyAttribute which allows you to specify the name of a JSON property, so your code should be: public class TeamScore { [JsonProperty("eighty_min_score")] public string EightyMinScore { get; set; } [JsonProperty("home_or_away")] ...